56249985 has 16 divisors (see below), whose sum is σ = 98182080. Its totient is φ = 27272640.

The previous prime is 56249981. The next prime is 56250011. The reversal of 56249985 is 58994265.

It is not a de Polignac number, because 56249985 - 2² = 56249981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56249981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170290 + ... + 170619.

It is an arithmetic number, because the mean of its divisors is an integer number (6136380).

Almost surely, 2^56249985 is an apocalyptic number.

56249985 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56249985 is a deficient number, since it is larger than the sum of its proper divisors (41932095).

56249985 is a wasteful number, since it uses less digits than its factorization.

56249985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340928.

The product of its digits is 777600, while the sum is 48.

The square root of 56249985 is about 7499.9989999999. The cubic root of 56249985 is about 383.1546821386.

The spelling of 56249985 in words is "fifty-six million, two hundred forty-nine thousand, nine hundred eighty-five".