56775090 has 16 divisors (see below), whose sum is σ = 136260288. Its totient is φ = 15140016.

The previous prime is 56775077. The next prime is 56775091. The reversal of 56775090 is 9057765.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56775091) 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, 946222 + ... + 946281.

It is an arithmetic number, because the mean of its divisors is an integer number (8516268).

Almost surely, 2^56775090 is an apocalyptic number.

56775090 is an abundant number, since it is smaller than the sum of its proper divisors (79485198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56775090 is a wasteful number, since it uses less digits than its factorization.

56775090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892513.

The product of its (nonzero) digits is 66150, while the sum is 39.

The square root of 56775090 is about 7534.9246844278. The cubic root of 56775090 is about 384.3432667305.

It can be divided in two parts, 567 and 75090, that added together give a palindrome (75657).

The spelling of 56775090 in words is "fifty-six million, seven hundred seventy-five thousand, ninety".