54782931 has 16 divisors (see below), whose sum is σ = 85184000. Its totient is φ = 31303944.

The previous prime is 54782927. The next prime is 54782933. The reversal of 54782931 is 13928745.

It is not a de Polignac number, because 54782931 - 2² = 54782927 is a prime.

It is a super-2 number, since 2×54782931² = 6002339057901522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 54782931.

It is not an unprimeable number, because it can be changed into a prime (54782933) 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, 25591 + ... + 27648.

It is an arithmetic number, because the mean of its divisors is an integer number (5324000).

Almost surely, 2^54782931 is an apocalyptic number.

54782931 is a deficient number, since it is larger than the sum of its proper divisors (30401069).

54782931 is an equidigital number, since it uses as much as digits as its factorization.

54782931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53263 (or 53249 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 54782931 is about 7401.5492297221. The cubic root of 54782931 is about 379.7942815416.

The spelling of 54782931 in words is "fifty-four million, seven hundred eighty-two thousand, nine hundred thirty-one".