91679525 has 24 divisors (see below), whose sum is σ = 133443840. Its totient is φ = 61162560.

The previous prime is 91679519. The next prime is 91679543. The reversal of 91679525 is 52597619.

It is a happy number.

It is not a de Polignac number, because 91679525 - 2⁴ = 91679509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 605 + ... + 13554.

It is an arithmetic number, because the mean of its divisors is an integer number (5560160).

Almost surely, 2^91679525 is an apocalyptic number.

It is an amenable number.

91679525 is a deficient number, since it is larger than the sum of its proper divisors (41764315).

91679525 is a wasteful number, since it uses less digits than its factorization.

91679525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14213 (or 14208 counting only the distinct ones).

The product of its digits is 170100, while the sum is 44.

The square root of 91679525 is about 9574.9425585744. The cubic root of 91679525 is about 450.9109530308.

The spelling of 91679525 in words is "ninety-one million, six hundred seventy-nine thousand, five hundred twenty-five".