56528645 has 8 divisors (see below), whose sum is σ = 68764056. Its totient is φ = 44603136.

The previous prime is 56528623. The next prime is 56528657. The reversal of 56528645 is 54682565.

It can be written as a sum of positive squares in 4 ways, for example, as 6713281 + 49815364 = 2591^2 + 7058^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56528645 - 2⁸ = 56528389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77072 + ... + 77801.

It is an arithmetic number, because the mean of its divisors is an integer number (8595507).

Almost surely, 2^56528645 is an apocalyptic number.

It is an amenable number.

56528645 is a deficient number, since it is larger than the sum of its proper divisors (12235411).

56528645 is a wasteful number, since it uses less digits than its factorization.

56528645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154951.

The product of its digits is 288000, while the sum is 41.

The square root of 56528645 is about 7518.5533847942. The cubic root of 56528645 is about 383.7863507884.

The spelling of 56528645 in words is "fifty-six million, five hundred twenty-eight thousand, six hundred forty-five".