56075390 has 16 divisors (see below), whose sum is σ = 115355232. Its totient is φ = 19225824.

The previous prime is 56075359. The next prime is 56075399. The reversal of 56075390 is 9357065.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56075390.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56075399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400469 + ... + 400608.

It is an arithmetic number, because the mean of its divisors is an integer number (7209702).

Almost surely, 2^56075390 is an apocalyptic number.

56075390 is an abundant number, since it is smaller than the sum of its proper divisors (59279842).

56075390 is a wasteful number, since it uses less digits than its factorization.

56075390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801091.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 56075390 is about 7488.3502856103. The cubic root of 56075390 is about 382.7578451418.

It can be divided in two parts, 56075 and 390, that added together give a palindrome (56465).

The spelling of 56075390 in words is "fifty-six million, seventy-five thousand, three hundred ninety".