91352915 has 4 divisors (see below), whose sum is σ = 109623504. Its totient is φ = 73082328.

The previous prime is 91352903. The next prime is 91352923. The reversal of 91352915 is 51925319.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91352915 - 2⁸ = 91352659 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9135287 + ... + 9135296.

It is an arithmetic number, because the mean of its divisors is an integer number (27405876).

Almost surely, 2^91352915 is an apocalyptic number.

91352915 is a deficient number, since it is larger than the sum of its proper divisors (18270589).

91352915 is a wasteful number, since it uses less digits than its factorization.

91352915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18270588.

The product of its digits is 12150, while the sum is 35.

The square root of 91352915 is about 9557.8718865655. The cubic root of 91352915 is about 450.3748563769.

The spelling of 91352915 in words is "ninety-one million, three hundred fifty-two thousand, nine hundred fifteen".