55539024321 has 32 divisors (see below), whose sum is σ = 81770115456. Its totient is φ = 33528422400.

The previous prime is 55539024271. The next prime is 55539024329. The reversal of 55539024321 is 12342093555.

It is not a de Polignac number, because 55539024321 - 2³⁰ = 54465282497 is a prime.

It is a super-2 number, since 2×55539024321² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55539024321.

It is not an unprimeable number, because it can be changed into a prime (55539024329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 999141 + ... + 1053261.

It is an arithmetic number, because the mean of its divisors is an integer number (2555316108).

Almost surely, 2^55539024321 is an apocalyptic number.

It is an amenable number.

55539024321 is a deficient number, since it is larger than the sum of its proper divisors (26231091135).

55539024321 is a wasteful number, since it uses less digits than its factorization.

55539024321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54414 (or 54392 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 55539024321 in words is "fifty-five billion, five hundred thirty-nine million, twenty-four thousand, three hundred twenty-one".