56381306 has 4 divisors (see below), whose sum is σ = 84571962. Its totient is φ = 28190652.

The previous prime is 56381293. The next prime is 56381323. The reversal of 56381306 is 60318365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60318365 = 5 ⋅12063673.

It can be written as a sum of positive squares in only one way, i.e., 52345225 + 4036081 = 7235^2 + 2009^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14095325 + ... + 14095328.

Almost surely, 2^56381306 is an apocalyptic number.

56381306 is a deficient number, since it is larger than the sum of its proper divisors (28190656).

56381306 is a wasteful number, since it uses less digits than its factorization.

56381306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28190655.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 56381306 is about 7508.7486307640. The cubic root of 56381306 is about 383.4526208887.

The spelling of 56381306 in words is "fifty-six million, three hundred eighty-one thousand, three hundred six".