56521445 has 8 divisors (see below), whose sum is σ = 67866144. Its totient is φ = 45190224.

The previous prime is 56521429. The next prime is 56521453. The reversal of 56521445 is 54412565.

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 56521445 - 2⁴ = 56521429 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, 14162 + ... + 17708.

It is an arithmetic number, because the mean of its divisors is an integer number (8483268).

Almost surely, 2^56521445 is an apocalyptic number.

It is an amenable number.

56521445 is a deficient number, since it is larger than the sum of its proper divisors (11344699).

56521445 is a wasteful number, since it uses less digits than its factorization.

56521445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6739.

The product of its digits is 24000, while the sum is 32.

The square root of 56521445 is about 7518.0745540331. The cubic root of 56521445 is about 383.7700559285.

The spelling of 56521445 in words is "fifty-six million, five hundred twenty-one thousand, four hundred forty-five".