56809242 has 64 divisors (see below), whose sum is σ = 145463040. Its totient is φ = 16098048.

The previous prime is 56809217. The next prime is 56809261. The reversal of 56809242 is 24290865.

It is a happy number.

56809242 is a `hidden beast` number, since 568 + 0 + 92 + 4 + 2 = 666.

It is a super-2 number, since 2×56809242² = 6454579953229128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56809197 and 56809206.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51238 + ... + 52334.

It is an arithmetic number, because the mean of its divisors is an integer number (2272860).

Almost surely, 2^56809242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56809242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72731520).

56809242 is an abundant number, since it is smaller than the sum of its proper divisors (88653798).

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

56809242 is a wasteful number, since it uses less digits than its factorization.

56809242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 56809242 is about 7537.1905906644. The cubic root of 56809242 is about 384.4203161325.

The spelling of 56809242 in words is "fifty-six million, eight hundred nine thousand, two hundred forty-two".