91312153 has 2 divisors, whose sum is σ = 91312154. Its totient is φ = 91312152.

The previous prime is 91312141. The next prime is 91312183. The reversal of 91312153 is 35121319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67026969 + 24285184 = 8187^2 + 4928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91312153 is a prime.

It is not a weakly prime, because it can be changed into another prime (91312183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45656076 + 45656077.

It is an arithmetic number, because the mean of its divisors is an integer number (45656077).

Almost surely, 2^91312153 is an apocalyptic number.

It is an amenable number.

91312153 is a deficient number, since it is larger than the sum of its proper divisors (1).

91312153 is an equidigital number, since it uses as much as digits as its factorization.

91312153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 810, while the sum is 25.

The square root of 91312153 is about 9555.7392701978. The cubic root of 91312153 is about 450.3078601164.

The spelling of 91312153 in words is "ninety-one million, three hundred twelve thousand, one hundred fifty-three".