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55529861 = 127437243
BaseRepresentation
bin1101001111010…
…1000110000101
310212111012122112
43103311012011
5103203423421
65302110405
71242665432
oct323650605
9125435575
1055529861
1129388452
121671b405
13b67340a
147536b89
154d1d45b
hex34f5185

55529861 has 4 divisors (see below), whose sum is σ = 55967232. Its totient is φ = 55092492.

The previous prime is 55529857. The next prime is 55529869. The reversal of 55529861 is 16892555.

55529861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 55529861 - 22 = 55529857 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 (55529869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218495 + ... + 218748.

It is an arithmetic number, because the mean of its divisors is an integer number (13991808).

Almost surely, 255529861 is an apocalyptic number.

It is an amenable number.

55529861 is a deficient number, since it is larger than the sum of its proper divisors (437371).

55529861 is a wasteful number, since it uses less digits than its factorization.

55529861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437370.

The product of its digits is 108000, while the sum is 41.

The square root of 55529861 is about 7451.8360824699. The cubic root of 55529861 is about 381.5125792657.

The spelling of 55529861 in words is "fifty-five million, five hundred twenty-nine thousand, eight hundred sixty-one".

Divisors: 1 127 437243 55529861