56381129 has 16 divisors (see below), whose sum is σ = 68916096. Its totient is φ = 45024000.

The previous prime is 56381123. The next prime is 56381159. The reversal of 56381129 is 92118365.

It is not a de Polignac number, because 56381129 - 2²⁴ = 39603913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56381123) 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, 9674 + ... + 14364.

It is an arithmetic number, because the mean of its divisors is an integer number (4307256).

Almost surely, 2^56381129 is an apocalyptic number.

It is an amenable number.

56381129 is a deficient number, since it is larger than the sum of its proper divisors (12534967).

56381129 is a wasteful number, since it uses less digits than its factorization.

56381129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816.

The product of its digits is 12960, while the sum is 35.

The square root of 56381129 is about 7508.7368445032. The cubic root of 56381129 is about 383.4522196257.

The spelling of 56381129 in words is "fifty-six million, three hundred eighty-one thousand, one hundred twenty-nine".