5261520571 has 2 divisors, whose sum is σ = 5261520572. Its totient is φ = 5261520570.

The previous prime is 5261520499. The next prime is 5261520617. The reversal of 5261520571 is 1750251625.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5261520571 - 2²³ = 5253131963 is a prime.

It is not a weakly prime, because it can be changed into another prime (5061520571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630760285 + 2630760286.

It is an arithmetic number, because the mean of its divisors is an integer number (2630760286).

Almost surely, 2^5261520571 is an apocalyptic number.

5261520571 is a deficient number, since it is larger than the sum of its proper divisors (1).

5261520571 is an equidigital number, since it uses as much as digits as its factorization.

5261520571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 5261520571 is about 72536.3396581327. The cubic root of 5261520571 is about 1739.2836892786.

The spelling of 5261520571 in words is "five billion, two hundred sixty-one million, five hundred twenty thousand, five hundred seventy-one".