55360931 has 4 divisors (see below), whose sum is σ = 57767952. Its totient is φ = 52953912.

The previous prime is 55360919. The next prime is 55360957. The reversal of 55360931 is 13906355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13906355 = 5 ⋅2781271.

It is not a de Polignac number, because 55360931 - 2⁶ = 55360867 is a prime.

It is a super-2 number, since 2×55360931² = 6129665362373522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55380931) 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, 1203476 + ... + 1203521.

It is an arithmetic number, because the mean of its divisors is an integer number (14441988).

Almost surely, 2^55360931 is an apocalyptic number.

55360931 is a deficient number, since it is larger than the sum of its proper divisors (2407021).

55360931 is a wasteful number, since it uses less digits than its factorization.

55360931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407020.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 55360931 is about 7440.4926584199. The cubic root of 55360931 is about 381.1253138443.

The spelling of 55360931 in words is "fifty-five million, three hundred sixty thousand, nine hundred thirty-one".