91426315 has 4 divisors (see below), whose sum is σ = 109711584. Its totient is φ = 73141048.

The previous prime is 91426253. The next prime is 91426331. The reversal of 91426315 is 51362419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51362419 = 3511 ⋅14629.

It is a cyclic number.

It is not a de Polignac number, because 91426315 - 2¹⁹ = 90902027 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9142627 + ... + 9142636.

It is an arithmetic number, because the mean of its divisors is an integer number (27427896).

Almost surely, 2^91426315 is an apocalyptic number.

91426315 is a deficient number, since it is larger than the sum of its proper divisors (18285269).

91426315 is a wasteful number, since it uses less digits than its factorization.

91426315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18285268.

The product of its digits is 6480, while the sum is 31.

The square root of 91426315 is about 9561.7108824729. The cubic root of 91426315 is about 450.4954460875.

The spelling of 91426315 in words is "ninety-one million, four hundred twenty-six thousand, three hundred fifteen".