5997557261 has 2 divisors, whose sum is σ = 5997557262. Its totient is φ = 5997557260.

The previous prime is 5997557231. The next prime is 5997557297. The reversal of 5997557261 is 1627557995.

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., 5202881161 + 794676100 = 72131^2 + 28190^2 .

It is a cyclic number.

It is not a de Polignac number, because 5997557261 - 2¹⁴ = 5997540877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5997557197 and 5997557206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5997557231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2998778630 + 2998778631.

It is an arithmetic number, because the mean of its divisors is an integer number (2998778631).

Almost surely, 2^5997557261 is an apocalyptic number.

It is an amenable number.

5997557261 is a deficient number, since it is larger than the sum of its proper divisors (1).

5997557261 is an equidigital number, since it uses as much as digits as its factorization.

5997557261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5953500, while the sum is 56.

The square root of 5997557261 is about 77443.8975065176. The cubic root of 5997557261 is about 1816.8739620628.

The spelling of 5997557261 in words is "five billion, nine hundred ninety-seven million, five hundred fifty-seven thousand, two hundred sixty-one".