56715321 has 8 divisors (see below), whose sum is σ = 81437440. Its totient is φ = 34901712.

The previous prime is 56715319. The next prime is 56715331. The reversal of 56715321 is 12351765.

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

It is not a de Polignac number, because 56715321 - 2¹ = 56715319 is a prime.

It is a super-2 number, since 2×56715321² = 6433255272266082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56715331) 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, 727081 + ... + 727158.

It is an arithmetic number, because the mean of its divisors is an integer number (10179680).

Almost surely, 2^56715321 is an apocalyptic number.

It is an amenable number.

56715321 is a deficient number, since it is larger than the sum of its proper divisors (24722119).

56715321 is a wasteful number, since it uses less digits than its factorization.

56715321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454255.

The product of its digits is 6300, while the sum is 30.

The square root of 56715321 is about 7530.9575088431. The cubic root of 56715321 is about 384.2083491197.

The spelling of 56715321 in words is "fifty-six million, seven hundred fifteen thousand, three hundred twenty-one".