54931641 has 32 divisors (see below), whose sum is σ = 82736640. Its totient is φ = 32212224.

The previous prime is 54931633. The next prime is 54931663. The reversal of 54931641 is 14613945.

It is not a de Polignac number, because 54931641 - 2³ = 54931633 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54931621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80086 + ... + 80768.

It is an arithmetic number, because the mean of its divisors is an integer number (2585520).

Almost surely, 2^54931641 is an apocalyptic number.

54931641 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

54931641 is the 4688-th centered pentagonal number.

It is an amenable number.

54931641 is a deficient number, since it is larger than the sum of its proper divisors (27804999).

54931641 is a wasteful number, since it uses less digits than its factorization.

54931641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805.

The product of its digits is 12960, while the sum is 33.

The square root of 54931641 is about 7411.5882913179. The cubic root of 54931641 is about 380.1376255884.

The spelling of 54931641 in words is "fifty-four million, nine hundred thirty-one thousand, six hundred forty-one".