54856631 has 2 divisors, whose sum is σ = 54856632. Its totient is φ = 54856630.

The previous prime is 54856621. The next prime is 54856649. The reversal of 54856631 is 13665845.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54856631 is a prime.

It is a super-2 number, since 2×54856631² = 6018499929340322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54856601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27428315 + 27428316.

It is an arithmetic number, because the mean of its divisors is an integer number (27428316).

Almost surely, 2^54856631 is an apocalyptic number.

54856631 is a deficient number, since it is larger than the sum of its proper divisors (1).

54856631 is an equidigital number, since it uses as much as digits as its factorization.

54856631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 38.

The square root of 54856631 is about 7406.5262437934. The cubic root of 54856631 is about 379.9645188478.

The spelling of 54856631 in words is "fifty-four million, eight hundred fifty-six thousand, six hundred thirty-one".