56251613546 has 4 divisors (see below), whose sum is σ = 84377420322. Its totient is φ = 28125806772.

The previous prime is 56251613491. The next prime is 56251613563. The reversal of 56251613546 is 64531615265.

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., 47344972921 + 8906640625 = 217589^2 + 94375^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56251613497 and 56251613506.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 14062903385 + ... + 14062903388.

Almost surely, 2^56251613546 is an apocalyptic number.

56251613546 is a deficient number, since it is larger than the sum of its proper divisors (28125806776).

56251613546 is a wasteful number, since it uses less digits than its factorization.

56251613546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28125806775.

The product of its digits is 648000, while the sum is 44.

The spelling of 56251613546 in words is "fifty-six billion, two hundred fifty-one million, six hundred thirteen thousand, five hundred forty-six".