56251632539 has 2 divisors, whose sum is σ = 56251632540. Its totient is φ = 56251632538.

The previous prime is 56251632533. The next prime is 56251632637. The reversal of 56251632539 is 93523615265.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56251632539 - 2¹² = 56251628443 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 56251632493 and 56251632502.

It is not a weakly prime, because it can be changed into another prime (56251632533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28125816269 + 28125816270.

It is an arithmetic number, because the mean of its divisors is an integer number (28125816270).

Almost surely, 2^56251632539 is an apocalyptic number.

56251632539 is a deficient number, since it is larger than the sum of its proper divisors (1).

56251632539 is an equidigital number, since it uses as much as digits as its factorization.

56251632539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458000, while the sum is 47.

The spelling of 56251632539 in words is "fifty-six billion, two hundred fifty-one million, six hundred thirty-two thousand, five hundred thirty-nine".