56490456 has 128 divisors (see below), whose sum is σ = 167650560. Its totient is φ = 15667200.

The previous prime is 56490437. The next prime is 56490457. The reversal of 56490456 is 65409465.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56490457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183855 + ... + 184161.

It is an arithmetic number, because the mean of its divisors is an integer number (1309770).

Almost surely, 2^56490456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56490456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83825280).

56490456 is an abundant number, since it is smaller than the sum of its proper divisors (111160104).

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

56490456 is a wasteful number, since it uses less digits than its factorization.

56490456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 56490456 is about 7516.0133049377. The cubic root of 56490456 is about 383.6999065992.

The spelling of 56490456 in words is "fifty-six million, four hundred ninety thousand, four hundred fifty-six".