55804566831 has 16 divisors (see below), whose sum is σ = 80382427104. Its totient is φ = 34232932224.

The previous prime is 55804566821. The next prime is 55804566847. The reversal of 55804566831 is 13866540855.

It is a happy number.

It is not a de Polignac number, because 55804566831 - 2⁹ = 55804566319 is a prime.

It is a super-2 number, since 2×55804566831² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55804566821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2244556 + ... + 2269281.

It is an arithmetic number, because the mean of its divisors is an integer number (5023901694).

Almost surely, 2^55804566831 is an apocalyptic number.

55804566831 is a deficient number, since it is larger than the sum of its proper divisors (24577860273).

55804566831 is a wasteful number, since it uses less digits than its factorization.

55804566831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4514170.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 55804566831 in words is "fifty-five billion, eight hundred four million, five hundred sixty-six thousand, eight hundred thirty-one".