91412523 has 32 divisors (see below), whose sum is σ = 138600000. Its totient is φ = 59533056.

The previous prime is 91412507. The next prime is 91412549. The reversal of 91412523 is 32521419.

It is not a de Polignac number, because 91412523 - 2⁴ = 91412507 is a prime.

It is a super-2 number, since 2×91412523² = 16712498722451058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (91412323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 261753 + ... + 262101.

It is an arithmetic number, because the mean of its divisors is an integer number (4331250).

Almost surely, 2^91412523 is an apocalyptic number.

91412523 is a deficient number, since it is larger than the sum of its proper divisors (47187477).

91412523 is a wasteful number, since it uses less digits than its factorization.

91412523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556 (or 550 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 91412523 is about 9560.9896454290. The cubic root of 91412523 is about 450.4727919766.

It can be divided in two parts, 9141 and 2523, that added together give a square (11664 = 108²).

The spelling of 91412523 in words is "ninety-one million, four hundred twelve thousand, five hundred twenty-three".