55507604451 has 32 divisors (see below), whose sum is σ = 86450027328. Its totient is φ = 31365058560.

The previous prime is 55507604447. The next prime is 55507604567. The reversal of 55507604451 is 15440670555.

It is not a de Polignac number, because 55507604451 - 2² = 55507604447 is a prime.

It is a super-2 number, since 2×55507604451² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55507604441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 993816 + ... + 1048181.

It is an arithmetic number, because the mean of its divisors is an integer number (2701563354).

Almost surely, 2^55507604451 is an apocalyptic number.

55507604451 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55507604451 is a deficient number, since it is larger than the sum of its proper divisors (30942422877).

55507604451 is a wasteful number, since it uses less digits than its factorization.

55507604451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2042071.

The product of its (nonzero) digits is 420000, while the sum is 42.

The spelling of 55507604451 in words is "fifty-five billion, five hundred seven million, six hundred four thousand, four hundred fifty-one".