56523090 has 32 divisors (see below), whose sum is σ = 146091456. Its totient is φ = 13913280.

The previous prime is 56523073. The next prime is 56523101. The reversal of 56523090 is 9032565.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72076 + ... + 72855.

It is an arithmetic number, because the mean of its divisors is an integer number (4565358).

Almost surely, 2^56523090 is an apocalyptic number.

56523090 is an abundant number, since it is smaller than the sum of its proper divisors (89568366).

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

56523090 is a wasteful number, since it uses less digits than its factorization.

56523090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144954.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 56523090 is about 7518.1839562490. The cubic root of 56523090 is about 383.7737789733.

The spelling of 56523090 in words is "fifty-six million, five hundred twenty-three thousand, ninety".