56391135 has 16 divisors (see below), whose sum is σ = 90405600. Its totient is φ = 30015360.

The previous prime is 56391133. The next prime is 56391151. The reversal of 56391135 is 53119365.

It is not a de Polignac number, because 56391135 - 2¹ = 56391133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56391096 and 56391105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56391131) 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, 4641 + ... + 11589.

It is an arithmetic number, because the mean of its divisors is an integer number (5650350).

Almost surely, 2^56391135 is an apocalyptic number.

56391135 is a deficient number, since it is larger than the sum of its proper divisors (34014465).

56391135 is a wasteful number, since it uses less digits than its factorization.

56391135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7498.

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

The square root of 56391135 is about 7509.4031054405. The cubic root of 56391135 is about 383.4749021321.

The spelling of 56391135 in words is "fifty-six million, three hundred ninety-one thousand, one hundred thirty-five".