55214931 has 16 divisors (see below), whose sum is σ = 78214400. Its totient is φ = 34548768.

The previous prime is 55214921. The next prime is 55214933. The reversal of 55214931 is 13941255.

It is not a de Polignac number, because 55214931 - 2⁵ = 55214899 is a prime.

It is a super-2 number, since 2×55214931² = 6097377210669522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55214933) 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, 1770 + ... + 10656.

It is an arithmetic number, because the mean of its divisors is an integer number (4888400).

Almost surely, 2^55214931 is an apocalyptic number.

55214931 is a deficient number, since it is larger than the sum of its proper divisors (22999469).

55214931 is a wasteful number, since it uses less digits than its factorization.

55214931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9018.

The product of its digits is 5400, while the sum is 30.

The square root of 55214931 is about 7430.6750029859. The cubic root of 55214931 is about 380.7899793863.

The spelling of 55214931 in words is "fifty-five million, two hundred fourteen thousand, nine hundred thirty-one".