55545012531 has 24 divisors (see below), whose sum is σ = 80868060000. Its totient is φ = 36736900992.

The previous prime is 55545012527. The next prime is 55545012571. The reversal of 55545012531 is 13521054555.

55545012531 is a `hidden beast` number, since 5 + 55 + 450 + 125 + 31 = 666.

It is not a de Polignac number, because 55545012531 - 2² = 55545012527 is a prime.

It is a super-2 number, since 2×55545012531² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55545012521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1100415 + ... + 1149783.

It is an arithmetic number, because the mean of its divisors is an integer number (3369502500).

Almost surely, 2^55545012531 is an apocalyptic number.

55545012531 is a deficient number, since it is larger than the sum of its proper divisors (25323047469).

55545012531 is a wasteful number, since it uses less digits than its factorization.

55545012531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50363 (or 50360 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The spelling of 55545012531 in words is "fifty-five billion, five hundred forty-five million, twelve thousand, five hundred thirty-one".