56216490 has 32 divisors (see below), whose sum is σ = 147185856. Its totient is φ = 13628160.

The previous prime is 56216477. The next prime is 56216491. The reversal of 56216490 is 9461265.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (56216491) 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, 84847 + ... + 85506.

It is an arithmetic number, because the mean of its divisors is an integer number (4599558).

Almost surely, 2^56216490 is an apocalyptic number.

56216490 is an abundant number, since it is smaller than the sum of its proper divisors (90969366).

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

56216490 is a wasteful number, since it uses less digits than its factorization.

56216490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170374.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 56216490 is about 7497.7656671838. The cubic root of 56216490 is about 383.0786150707.

The spelling of 56216490 in words is "fifty-six million, two hundred sixteen thousand, four hundred ninety".