56507551049 has 2 divisors, whose sum is σ = 56507551050. Its totient is φ = 56507551048.

The previous prime is 56507551043. The next prime is 56507551151. The reversal of 56507551049 is 94015570565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44587278649 + 11920272400 = 211157^2 + 109180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56507551049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56507550994 and 56507551012.

It is not a weakly prime, because it can be changed into another prime (56507551043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28253775524 + 28253775525.

It is an arithmetic number, because the mean of its divisors is an integer number (28253775525).

Almost surely, 2^56507551049 is an apocalyptic number.

It is an amenable number.

56507551049 is a deficient number, since it is larger than the sum of its proper divisors (1).

56507551049 is an equidigital number, since it uses as much as digits as its factorization.

56507551049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945000, while the sum is 47.

The spelling of 56507551049 in words is "fifty-six billion, five hundred seven million, five hundred fifty-one thousand, forty-nine".