91360253 has 2 divisors, whose sum is σ = 91360254. Its totient is φ = 91360252.

The previous prime is 91360223. The next prime is 91360267. The reversal of 91360253 is 35206319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79512889 + 11847364 = 8917^2 + 3442^2 .

It is a cyclic number.

It is not a de Polignac number, because 91360253 - 2¹² = 91356157 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 (91360223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45680126 + 45680127.

It is an arithmetic number, because the mean of its divisors is an integer number (45680127).

Almost surely, 2^91360253 is an apocalyptic number.

It is an amenable number.

91360253 is a deficient number, since it is larger than the sum of its proper divisors (1).

91360253 is an equidigital number, since it uses as much as digits as its factorization.

91360253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 91360253 is about 9558.2557509202. The cubic root of 91360253 is about 450.3869149675.

The spelling of 91360253 in words is "ninety-one million, three hundred sixty thousand, two hundred fifty-three".