91608501 has 16 divisors (see below), whose sum is σ = 124044480. Its totient is φ = 60128640.

The previous prime is 91608467. The next prime is 91608523. The reversal of 91608501 is 10580619.

It is a happy number.

It is not a de Polignac number, because 91608501 - 2⁶ = 91608437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91608581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77646 + ... + 78816.

It is an arithmetic number, because the mean of its divisors is an integer number (7752780).

Almost surely, 2^91608501 is an apocalyptic number.

It is an amenable number.

91608501 is a deficient number, since it is larger than the sum of its proper divisors (32435979).

91608501 is a wasteful number, since it uses less digits than its factorization.

91608501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 91608501 is about 9571.2329926713. The cubic root of 91608501 is about 450.7944829207.

The spelling of 91608501 in words is "ninety-one million, six hundred eight thousand, five hundred one".