91252985 has 8 divisors (see below), whose sum is σ = 109555200. Its totient is φ = 72967984.

The previous prime is 91252981. The next prime is 91253023. The reversal of 91252985 is 58925219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91252985 - 2² = 91252981 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91252981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16616 + ... + 21414.

It is an arithmetic number, because the mean of its divisors is an integer number (13694400).

Almost surely, 2^91252985 is an apocalyptic number.

It is an amenable number.

91252985 is a deficient number, since it is larger than the sum of its proper divisors (18302215).

91252985 is a wasteful number, since it uses less digits than its factorization.

91252985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607.

The product of its digits is 64800, while the sum is 41.

The square root of 91252985 is about 9552.6428280346. The cubic root of 91252985 is about 450.2105763431.

The spelling of 91252985 in words is "ninety-one million, two hundred fifty-two thousand, nine hundred eighty-five".