54920931 has 16 divisors (see below), whose sum is σ = 83500704. Its totient is φ = 31809024.

The previous prime is 54920927. The next prime is 54920947. The reversal of 54920931 is 13902945.

It is not a de Polignac number, because 54920931 - 2² = 54920927 is a prime.

It is a super-2 number, since 2×54920931² = 6032617323813522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54920892 and 54920901.

It is not an unprimeable number, because it can be changed into a prime (54920911) 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, 40756 + ... + 42081.

It is an arithmetic number, because the mean of its divisors is an integer number (5218794).

Almost surely, 2^54920931 is an apocalyptic number.

54920931 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

54920931 is a deficient number, since it is larger than the sum of its proper divisors (28579773).

54920931 is a wasteful number, since it uses less digits than its factorization.

54920931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82870.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 54920931 is about 7410.8657388999. The cubic root of 54920931 is about 380.1129188892.

The spelling of 54920931 in words is "fifty-four million, nine hundred twenty thousand, nine hundred thirty-one".