56308251 has 4 divisors (see below), whose sum is σ = 75077672. Its totient is φ = 37538832.

The previous prime is 56308249. The next prime is 56308261. The reversal of 56308251 is 15280365.

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

It is not a de Polignac number, because 56308251 - 2¹ = 56308249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56308261) 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, 9384706 + ... + 9384711.

It is an arithmetic number, because the mean of its divisors is an integer number (18769418).

Almost surely, 2^56308251 is an apocalyptic number.

56308251 is a deficient number, since it is larger than the sum of its proper divisors (18769421).

56308251 is a wasteful number, since it uses less digits than its factorization.

56308251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18769420.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 56308251 is about 7503.8823951339. The cubic root of 56308251 is about 383.2869321697.

The spelling of 56308251 in words is "fifty-six million, three hundred eight thousand, two hundred fifty-one".