91853497 has 2 divisors, whose sum is σ = 91853498. Its totient is φ = 91853496.

The previous prime is 91853473. The next prime is 91853521. The reversal of 91853497 is 79435819.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (91853473) and next prime (91853521).

It can be written as a sum of positive squares in only one way, i.e., 91853056 + 441 = 9584^2 + 21^2 .

It is a cyclic number.

It is not a de Polignac number, because 91853497 - 2¹¹ = 91851449 is a prime.

It is a super-2 number, since 2×91853497² = 16874129822258018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91853297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45926748 + 45926749.

It is an arithmetic number, because the mean of its divisors is an integer number (45926749).

Almost surely, 2^91853497 is an apocalyptic number.

It is an amenable number.

91853497 is a deficient number, since it is larger than the sum of its proper divisors (1).

91853497 is an equidigital number, since it uses as much as digits as its factorization.

91853497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 46.

The square root of 91853497 is about 9584.0230070675. The cubic root of 91853497 is about 451.1959905485.

The spelling of 91853497 in words is "ninety-one million, eight hundred fifty-three thousand, four hundred ninety-seven".