56704521 has 8 divisors (see below), whose sum is σ = 76517280. Its totient is φ = 37347392.

The previous prime is 56704489. The next prime is 56704553. The reversal of 56704521 is 12540765.

It is an interprime number because it is at equal distance from previous prime (56704489) and next prime (56704553).

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 56704521 - 2⁵ = 56704489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56704121) 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, 113616 + ... + 114113.

It is an arithmetic number, because the mean of its divisors is an integer number (9564660).

Almost surely, 2^56704521 is an apocalyptic number.

It is an amenable number.

56704521 is a deficient number, since it is larger than the sum of its proper divisors (19812759).

56704521 is a wasteful number, since it uses less digits than its factorization.

56704521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227815.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 56704521 is about 7530.2404344085. The cubic root of 56704521 is about 384.1839599804.

The spelling of 56704521 in words is "fifty-six million, seven hundred four thousand, five hundred twenty-one".