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55003141 = 290318947
BaseRepresentation
bin1101000111010…
…0100000000101
310211111110010101
43101310200011
5103040100031
65242524101
71235343004
oct321644005
9124443111
1055003141
1129058746
1216506631
13b51a74b
14743ac3b
154c67361
hex3474805

55003141 has 4 divisors (see below), whose sum is σ = 55024992. Its totient is φ = 54981292.

The previous prime is 55003139. The next prime is 55003147. The reversal of 55003141 is 14130055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55003141 - 21 = 55003139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55003147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6571 + ... + 12376.

It is an arithmetic number, because the mean of its divisors is an integer number (13756248).

Almost surely, 255003141 is an apocalyptic number.

It is an amenable number.

55003141 is a deficient number, since it is larger than the sum of its proper divisors (21851).

55003141 is a wasteful number, since it uses less digits than its factorization.

55003141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21850.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 55003141 is about 7416.4102502491. The cubic root of 55003141 is about 380.3024853769.

Adding to 55003141 its reverse (14130055), we get a palindrome (69133196).

The spelling of 55003141 in words is "fifty-five million, three thousand, one hundred forty-one".

Divisors: 1 2903 18947 55003141