56013797501 has 2 divisors, whose sum is σ = 56013797502. Its totient is φ = 56013797500.

The previous prime is 56013797491. The next prime is 56013797507. The reversal of 56013797501 is 10579731065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31505895001 + 24507902500 = 177499^2 + 156550^2 .

It is a cyclic number.

It is not a de Polignac number, because 56013797501 - 2¹⁰ = 56013796477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56013797507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28006898750 + 28006898751.

It is an arithmetic number, because the mean of its divisors is an integer number (28006898751).

Almost surely, 2^56013797501 is an apocalyptic number.

It is an amenable number.

56013797501 is a deficient number, since it is larger than the sum of its proper divisors (1).

56013797501 is an equidigital number, since it uses as much as digits as its factorization.

56013797501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 198450, while the sum is 44.

The spelling of 56013797501 in words is "fifty-six billion, thirteen million, seven hundred ninety-seven thousand, five hundred one".