56509828 has 6 divisors (see below), whose sum is σ = 98892206. Its totient is φ = 28254912.

The previous prime is 56509801. The next prime is 56509861. The reversal of 56509828 is 82890565.

It can be written as a sum of positive squares in only one way, i.e., 44063044 + 12446784 = 6638^2 + 3528^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7063725 + ... + 7063732.

Almost surely, 2^56509828 is an apocalyptic number.

It is an amenable number.

56509828 is a deficient number, since it is larger than the sum of its proper divisors (42382378).

56509828 is a wasteful number, since it uses less digits than its factorization.

56509828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14127461 (or 14127459 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 56509828 is about 7517.3019095950. The cubic root of 56509828 is about 383.7437617068.

The spelling of 56509828 in words is "fifty-six million, five hundred nine thousand, eight hundred twenty-eight".