5297561557 has 2 divisors, whose sum is σ = 5297561558. Its totient is φ = 5297561556.

The previous prime is 5297561519. The next prime is 5297561603. The reversal of 5297561557 is 7551657925.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3962828401 + 1334733156 = 62951^2 + 36534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5297561557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5297561957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2648780778 + 2648780779.

It is an arithmetic number, because the mean of its divisors is an integer number (2648780779).

Almost surely, 2^5297561557 is an apocalyptic number.

It is an amenable number.

5297561557 is a deficient number, since it is larger than the sum of its proper divisors (1).

5297561557 is an equidigital number, since it uses as much as digits as its factorization.

5297561557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3307500, while the sum is 52.

The square root of 5297561557 is about 72784.3496707912. The cubic root of 5297561557 is about 1743.2459729491.

The spelling of 5297561557 in words is "five billion, two hundred ninety-seven million, five hundred sixty-one thousand, five hundred fifty-seven".