56499986 has 4 divisors (see below), whose sum is σ = 84749982. Its totient is φ = 28249992.

The previous prime is 56499913. The next prime is 56499991. The reversal of 56499986 is 68999465.

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

It can be written as a sum of positive squares in only one way, i.e., 55785961 + 714025 = 7469^2 + 845^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14124995 + ... + 14124998.

Almost surely, 2^56499986 is an apocalyptic number.

56499986 is a deficient number, since it is larger than the sum of its proper divisors (28249996).

56499986 is a wasteful number, since it uses less digits than its factorization.

56499986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28249995.

The product of its digits is 4199040, while the sum is 56.

The square root of 56499986 is about 7516.6472579202. The cubic root of 56499986 is about 383.7214822467.

The spelling of 56499986 in words is "fifty-six million, four hundred ninety-nine thousand, nine hundred eighty-six".