56556215 has 8 divisors (see below), whose sum is σ = 67910400. Its totient is φ = 45216352.

The previous prime is 56556209. The next prime is 56556233. The reversal of 56556215 is 51265565.

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 56556215 - 2⁸ = 56555959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9386 + ... + 14184.

It is an arithmetic number, because the mean of its divisors is an integer number (8488800).

Almost surely, 2^56556215 is an apocalyptic number.

56556215 is a deficient number, since it is larger than the sum of its proper divisors (11354185).

56556215 is a wasteful number, since it uses less digits than its factorization.

56556215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7161.

The product of its digits is 45000, while the sum is 35.

The square root of 56556215 is about 7520.3866256995. The cubic root of 56556215 is about 383.8487337330.

The spelling of 56556215 in words is "fifty-six million, five hundred fifty-six thousand, two hundred fifteen".