56111599 has 4 divisors (see below), whose sum is σ = 56210440. Its totient is φ = 56012760.

The previous prime is 56111593. The next prime is 56111633. The reversal of 56111599 is 99511165.

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 56111599 - 2³ = 56111591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56111591) 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, 48564 + ... + 49705.

It is an arithmetic number, because the mean of its divisors is an integer number (14052610).

Almost surely, 2^56111599 is an apocalyptic number.

56111599 is a deficient number, since it is larger than the sum of its proper divisors (98841).

56111599 is an equidigital number, since it uses as much as digits as its factorization.

56111599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98840.

The product of its digits is 12150, while the sum is 37.

The square root of 56111599 is about 7490.7675841665. The cubic root of 56111599 is about 382.8402122124.

The spelling of 56111599 in words is "fifty-six million, one hundred eleven thousand, five hundred ninety-nine".