961137571 has 2 divisors, whose sum is σ = 961137572. Its totient is φ = 961137570.

The previous prime is 961137559. The next prime is 961137581. The reversal of 961137571 is 175731169.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 961137571 - 2¹⁵ = 961104803 is a prime.

It is not a weakly prime, because it can be changed into another prime (961137511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480568785 + 480568786.

It is an arithmetic number, because the mean of its divisors is an integer number (480568786).

Almost surely, 2^961137571 is an apocalyptic number.

961137571 is a deficient number, since it is larger than the sum of its proper divisors (1).

961137571 is an equidigital number, since it uses as much as digits as its factorization.

961137571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 40.

The square root of 961137571 is about 31002.2188076918. The cubic root of 961137571 is about 986.8743274994.

It can be divided in two parts, 96113 and 7571, that added together give a square (103684 = 322²).

The spelling of 961137571 in words is "nine hundred sixty-one million, one hundred thirty-seven thousand, five hundred seventy-one".