56045521 has 8 divisors (see below), whose sum is σ = 64099584. Its totient is φ = 48003360.

The previous prime is 56045513. The next prime is 56045537. The reversal of 56045521 is 12554065.

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 56045521 - 2³ = 56045513 is a prime.

It is a super-2 number, since 2×56045521² = 6282200848322882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56045521.

It is not an unprimeable number, because it can be changed into a prime (56045581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12501 + ... + 16381.

It is an arithmetic number, because the mean of its divisors is an integer number (8012448).

Almost surely, 2^56045521 is an apocalyptic number.

It is an amenable number.

56045521 is a deficient number, since it is larger than the sum of its proper divisors (8054063).

56045521 is a wasteful number, since it uses less digits than its factorization.

56045521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 56045521 is about 7486.3556554575. The cubic root of 56045521 is about 382.6898734073.

Adding to 56045521 its reverse (12554065), we get a palindrome (68599586).

The spelling of 56045521 in words is "fifty-six million, forty-five thousand, five hundred twenty-one".