54783931 has 4 divisors (see below), whose sum is σ = 55178200. Its totient is φ = 54389664.

The previous prime is 54783923. The next prime is 54783943. The reversal of 54783931 is 13938745.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13938745 = 5 ⋅2787749.

It is a cyclic number.

It is not a de Polignac number, because 54783931 - 2³ = 54783923 is a prime.

It is a super-2 number, since 2×54783931² = 6002558191625522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54783031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196926 + ... + 197203.

It is an arithmetic number, because the mean of its divisors is an integer number (13794550).

Almost surely, 2^54783931 is an apocalyptic number.

54783931 is a deficient number, since it is larger than the sum of its proper divisors (394269).

54783931 is a wasteful number, since it uses less digits than its factorization.

54783931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394268.

The product of its digits is 90720, while the sum is 40.

The square root of 54783931 is about 7401.6167828387. The cubic root of 54783931 is about 379.7965924315.

It can be divided in two parts, 5478 and 3931, that added together give a square (9409 = 97²).

The spelling of 54783931 in words is "fifty-four million, seven hundred eighty-three thousand, nine hundred thirty-one".