55369131 has 16 divisors (see below), whose sum is σ = 78271488. Its totient is φ = 34754400.

The previous prime is 55369129. The next prime is 55369157. The reversal of 55369131 is 13196355.

It is not a de Polignac number, because 55369131 - 2¹ = 55369129 is a prime.

It is a super-2 number, since 2×55369131² = 6131481335390322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55369092 and 55369101.

It is not an unprimeable number, because it can be changed into a prime (55369031) 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, 4605 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (4891968).

Almost surely, 2^55369131 is an apocalyptic number.

55369131 is a deficient number, since it is larger than the sum of its proper divisors (22902357).

55369131 is a wasteful number, since it uses less digits than its factorization.

55369131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16162.

The product of its digits is 12150, while the sum is 33.

The square root of 55369131 is about 7441.0436767970. The cubic root of 55369131 is about 381.1441302023.

The spelling of 55369131 in words is "fifty-five million, three hundred sixty-nine thousand, one hundred thirty-one".