91500653 has 2 divisors, whose sum is σ = 91500654. Its totient is φ = 91500652.

The previous prime is 91500571. The next prime is 91500697. The reversal of 91500653 is 35600519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85414564 + 6086089 = 9242^2 + 2467^2 .

It is a cyclic number.

It is not a de Polignac number, because 91500653 - 2²⁴ = 74723437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91500053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45750326 + 45750327.

It is an arithmetic number, because the mean of its divisors is an integer number (45750327).

Almost surely, 2^91500653 is an apocalyptic number.

It is an amenable number.

91500653 is a deficient number, since it is larger than the sum of its proper divisors (1).

91500653 is an equidigital number, since it uses as much as digits as its factorization.

91500653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 91500653 is about 9565.5973676504. The cubic root of 91500653 is about 450.6175110825.

The spelling of 91500653 in words is "ninety-one million, five hundred thousand, six hundred fifty-three".