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55032142501 = 721766064997
BaseRepresentation
bin110011010000001010…
…111101101010100101
312021001021200111102001
4303100022331222211
51400201212030001
641140441445301
73655514331100
oct632012755245
9167037614361
1055032142501
1121380234206
12a7ba1a0831
13526047383b
142940b9b737
15167154a001
hexcd02bdaa5

55032142501 has 12 divisors (see below), whose sum is σ = 67782687948. Its totient is φ = 44395677312.

The previous prime is 55032142489. The next prime is 55032142631. The reversal of 55032142501 is 10524123055.

55032142501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49919177476 + 5112965025 = 223426^2 + 71505^2 .

It is not a de Polignac number, because 55032142501 - 211 = 55032140453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55032142501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55032142301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33031666 + ... + 33033331.

It is an arithmetic number, because the mean of its divisors is an integer number (5648557329).

Almost surely, 255032142501 is an apocalyptic number.

It is an amenable number.

55032142501 is a deficient number, since it is larger than the sum of its proper divisors (12750545447).

55032142501 is a wasteful number, since it uses less digits than its factorization.

55032142501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66065028 (or 66065021 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 55032142501 its reverse (10524123055), we get a palindrome (65556265556).

The spelling of 55032142501 in words is "fifty-five billion, thirty-two million, one hundred forty-two thousand, five hundred one".

Divisors: 1 7 17 49 119 833 66064997 462454979 1123104949 3237184853 7861734643 55032142501