56351144137 has 4 divisors (see below), whose sum is σ = 56351619460. Its totient is φ = 56350668816.

The previous prime is 56351144099. The next prime is 56351144141. The reversal of 56351144137 is 73144115365.

It is a happy number.

56351144137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 49823150521 + 6527993616 = 223211^2 + 80796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56351144137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56351144137.

It is not an unprimeable number, because it can be changed into a prime (56351144537) 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, 101623 + ... + 350755.

It is an arithmetic number, because the mean of its divisors is an integer number (14087904865).

Almost surely, 2^56351144137 is an apocalyptic number.

It is an amenable number.

56351144137 is a deficient number, since it is larger than the sum of its proper divisors (475323).

56351144137 is a wasteful number, since it uses less digits than its factorization.

56351144137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475322.

The product of its digits is 151200, while the sum is 40.

The spelling of 56351144137 in words is "fifty-six billion, three hundred fifty-one million, one hundred forty-four thousand, one hundred thirty-seven".