56855719 has 4 divisors (see below), whose sum is σ = 56875360. Its totient is φ = 56836080.

The previous prime is 56855707. The next prime is 56855723. The reversal of 56855719 is 91755865.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56855719 - 2⁹ = 56855207 is a prime.

It is a super-2 number, since 2×56855719² = 6465145566013922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56855749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4527 + ... + 11584.

It is an arithmetic number, because the mean of its divisors is an integer number (14218840).

Almost surely, 2^56855719 is an apocalyptic number.

56855719 is a deficient number, since it is larger than the sum of its proper divisors (19641).

56855719 is a wasteful number, since it uses less digits than its factorization.

56855719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19640.

The product of its digits is 378000, while the sum is 46.

The square root of 56855719 is about 7540.2731382888. The cubic root of 56855719 is about 384.5251220422.

The spelling of 56855719 in words is "fifty-six million, eight hundred fifty-five thousand, seven hundred nineteen".