91362251 has 2 divisors, whose sum is σ = 91362252. Its totient is φ = 91362250.

The previous prime is 91362197. The next prime is 91362259. The reversal of 91362251 is 15226319.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91362251 - 2²² = 87167947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91362259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45681125 + 45681126.

It is an arithmetic number, because the mean of its divisors is an integer number (45681126).

Almost surely, 2^91362251 is an apocalyptic number.

91362251 is a deficient number, since it is larger than the sum of its proper divisors (1).

91362251 is an equidigital number, since it uses as much as digits as its factorization.

91362251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 91362251 is about 9558.3602673262. The cubic root of 91362251 is about 450.3901981841.

The spelling of 91362251 in words is "ninety-one million, three hundred sixty-two thousand, two hundred fifty-one".