54681831 has 8 divisors (see below), whose sum is σ = 81010160. Its totient is φ = 36454536.

The previous prime is 54681793. The next prime is 54681859. The reversal of 54681831 is 13818645.

54681831 is a `hidden beast` number, since 546 + 81 + 8 + 31 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-54681831 is a prime.

It is a super-2 number, since 2×54681831² = 5980205283025122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54681631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012600 + ... + 1012653.

It is an arithmetic number, because the mean of its divisors is an integer number (10126270).

Almost surely, 2^54681831 is an apocalyptic number.

54681831 is a deficient number, since it is larger than the sum of its proper divisors (26328329).

54681831 is a wasteful number, since it uses less digits than its factorization.

54681831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2025262 (or 2025256 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 54681831 is about 7394.7164245832. The cubic root of 54681831 is about 379.5605052805.

The spelling of 54681831 in words is "fifty-four million, six hundred eighty-one thousand, eight hundred thirty-one".