56687250451 has 4 divisors (see below), whose sum is σ = 61047808192. Its totient is φ = 52326692712.

The previous prime is 56687250427. The next prime is 56687250467. The reversal of 56687250451 is 15405278665.

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 56687250451 - 2⁵ = 56687250419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56687250395 and 56687250404.

It is not an unprimeable number, because it can be changed into a prime (56687250401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180278851 + ... + 2180278876.

It is an arithmetic number, because the mean of its divisors is an integer number (15261952048).

Almost surely, 2^56687250451 is an apocalyptic number.

56687250451 is a deficient number, since it is larger than the sum of its proper divisors (4360557741).

56687250451 is a wasteful number, since it uses less digits than its factorization.

56687250451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360557740.

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 56687250451 in words is "fifty-six billion, six hundred eighty-seven million, two hundred fifty thousand, four hundred fifty-one".