91465285 has 4 divisors (see below), whose sum is σ = 109758348. Its totient is φ = 73172224.

The previous prime is 91465271. The next prime is 91465307. The reversal of 91465285 is 58256419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58256419 = 13 ⋅4481263.

It can be written as a sum of positive squares in 2 ways, for example, as 22259524 + 69205761 = 4718^2 + 8319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91465285 is a prime.

It is a super-3 number, since 3×91465285³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9146524 + ... + 9146533.

It is an arithmetic number, because the mean of its divisors is an integer number (27439587).

Almost surely, 2^91465285 is an apocalyptic number.

It is an amenable number.

91465285 is a deficient number, since it is larger than the sum of its proper divisors (18293063).

91465285 is a wasteful number, since it uses less digits than its factorization.

91465285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18293062.

The product of its digits is 86400, while the sum is 40.

The square root of 91465285 is about 9563.7484805907. The cubic root of 91465285 is about 450.5594441234.

The spelling of 91465285 in words is "ninety-one million, four hundred sixty-five thousand, two hundred eighty-five".