56797290 has 96 divisors (see below), whose sum is σ = 162953856. Its totient is φ = 13610880.

The previous prime is 56797261. The next prime is 56797297. The reversal of 56797290 is 9279765.

56797290 = T₁₈₈ + T₁₈₉ + ... + T₇₀₂.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56797297) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101692 + ... + 102248.

It is an arithmetic number, because the mean of its divisors is an integer number (1697436).

Almost surely, 2^56797290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56797290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81476928).

56797290 is an abundant number, since it is smaller than the sum of its proper divisors (106156566).

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

56797290 is a wasteful number, since it uses less digits than its factorization.

56797290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 56797290 is about 7536.3976805898. The cubic root of 56797290 is about 384.3933550624.

The spelling of 56797290 in words is "fifty-six million, seven hundred ninety-seven thousand, two hundred ninety".