91275814 has 16 divisors (see below), whose sum is σ = 156619296. Its totient is φ = 39081600.

The previous prime is 91275809. The next prime is 91275817. The reversal of 91275814 is 41857219.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91275817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16974 + ... + 21694.

It is an arithmetic number, because the mean of its divisors is an integer number (9788706).

Almost surely, 2^91275814 is an apocalyptic number.

91275814 is a deficient number, since it is larger than the sum of its proper divisors (65343482).

91275814 is a wasteful number, since it uses less digits than its factorization.

91275814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111.

The product of its digits is 20160, while the sum is 37.

The square root of 91275814 is about 9553.8376582398. The cubic root of 91275814 is about 450.2481166686.

It can be divided in two parts, 9127 and 5814, that added together give a palindrome (14941).

The spelling of 91275814 in words is "ninety-one million, two hundred seventy-five thousand, eight hundred fourteen".