56511202537 has 2 divisors, whose sum is σ = 56511202538. Its totient is φ = 56511202536.

The previous prime is 56511202529. The next prime is 56511202543. The reversal of 56511202537 is 73520211565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55580891536 + 930311001 = 235756^2 + 30501^2 .

It is a cyclic number.

It is not a de Polignac number, because 56511202537 - 2³ = 56511202529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56511202496 and 56511202505.

It is not a weakly prime, because it can be changed into another prime (56511202507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28255601268 + 28255601269.

It is an arithmetic number, because the mean of its divisors is an integer number (28255601269).

Almost surely, 2^56511202537 is an apocalyptic number.

It is an amenable number.

56511202537 is a deficient number, since it is larger than the sum of its proper divisors (1).

56511202537 is an equidigital number, since it uses as much as digits as its factorization.

56511202537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63000, while the sum is 37.

The spelling of 56511202537 in words is "fifty-six billion, five hundred eleven million, two hundred two thousand, five hundred thirty-seven".