56217755 has 8 divisors (see below), whose sum is σ = 73594224. Its totient is φ = 40885600.

The previous prime is 56217719. The next prime is 56217767. The reversal of 56217755 is 55771265.

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

It is not a de Polignac number, because 56217755 - 2¹⁰ = 56216731 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 511016 + ... + 511125.

It is an arithmetic number, because the mean of its divisors is an integer number (9199278).

Almost surely, 2^56217755 is an apocalyptic number.

56217755 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

56217755 is a deficient number, since it is larger than the sum of its proper divisors (17376469).

56217755 is a wasteful number, since it uses less digits than its factorization.

56217755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022157.

The product of its digits is 73500, while the sum is 38.

The square root of 56217755 is about 7497.8500251739. The cubic root of 56217755 is about 383.0814884317.

The spelling of 56217755 in words is "fifty-six million, two hundred seventeen thousand, seven hundred fifty-five".