55701931 has 4 divisors (see below), whose sum is σ = 55717200. Its totient is φ = 55686664.

The previous prime is 55701917. The next prime is 55701973. The reversal of 55701931 is 13910755.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55701931 - 2⁹ = 55701419 is a prime.

It is a super-2 number, since 2×55701931² = 6205410234257522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55701893 and 55701902.

It is not an unprimeable number, because it can be changed into a prime (55701131) 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, 1410 + ... + 10648.

It is an arithmetic number, because the mean of its divisors is an integer number (13929300).

Almost surely, 2^55701931 is an apocalyptic number.

55701931 is a deficient number, since it is larger than the sum of its proper divisors (15269).

55701931 is an equidigital number, since it uses as much as digits as its factorization.

55701931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15268.

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 55701931 is about 7463.3726290465. The cubic root of 55701931 is about 381.9062364099.

The spelling of 55701931 in words is "fifty-five million, seven hundred one thousand, nine hundred thirty-one".