54979831 has 2 divisors, whose sum is σ = 54979832. Its totient is φ = 54979830.

The previous prime is 54979823. The next prime is 54979879. The reversal of 54979831 is 13897945.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54979831 - 2³ = 54979823 is a prime.

It is a super-2 number, since 2×54979831² = 6045563633577122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54979231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27489915 + 27489916.

It is an arithmetic number, because the mean of its divisors is an integer number (27489916).

Almost surely, 2^54979831 is an apocalyptic number.

54979831 is a deficient number, since it is larger than the sum of its proper divisors (1).

54979831 is an equidigital number, since it uses as much as digits as its factorization.

54979831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 54979831 is about 7414.8385687080. The cubic root of 54979831 is about 380.2487544847.

The spelling of 54979831 in words is "fifty-four million, nine hundred seventy-nine thousand, eight hundred thirty-one".