56215649 has 8 divisors (see below), whose sum is σ = 64871040. Its totient is φ = 47716416.

The previous prime is 56215589. The next prime is 56215673. The reversal of 56215649 is 94651265.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56215649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56215349) 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, 38264 + ... + 39705.

It is an arithmetic number, because the mean of its divisors is an integer number (8108880).

Almost surely, 2^56215649 is an apocalyptic number.

It is an amenable number.

56215649 is a deficient number, since it is larger than the sum of its proper divisors (8655391).

56215649 is a wasteful number, since it uses less digits than its factorization.

56215649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78079.

The product of its digits is 64800, while the sum is 38.

The square root of 56215649 is about 7497.7095835995. The cubic root of 56215649 is about 383.0767047728.

The spelling of 56215649 in words is "fifty-six million, two hundred fifteen thousand, six hundred forty-nine".