55945831 has 2 divisors, whose sum is σ = 55945832. Its totient is φ = 55945830.

The previous prime is 55945807. The next prime is 55945859. The reversal of 55945831 is 13854955.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55945831 - 2⁹ = 55945319 is a prime.

It is a super-2 number, since 2×55945831² = 6259872012561122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55945891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27972915 + 27972916.

It is an arithmetic number, because the mean of its divisors is an integer number (27972916).

Almost surely, 2^55945831 is an apocalyptic number.

55945831 is a deficient number, since it is larger than the sum of its proper divisors (1).

55945831 is an equidigital number, since it uses as much as digits as its factorization.

55945831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108000, while the sum is 40.

The square root of 55945831 is about 7479.6945793261. The cubic root of 55945831 is about 382.4628377469.

The spelling of 55945831 in words is "fifty-five million, nine hundred forty-five thousand, eight hundred thirty-one".