91011525 has 48 divisors (see below), whose sum is σ = 165846528. Its totient is φ = 43672000.

The previous prime is 91011499. The next prime is 91011533. The reversal of 91011525 is 52511019.

It is not a de Polignac number, because 91011525 - 2¹² = 91007429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91011495 and 91011504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 87760 + ... + 88790.

It is an arithmetic number, because the mean of its divisors is an integer number (3455136).

Almost surely, 2^91011525 is an apocalyptic number.

It is an amenable number.

91011525 is a deficient number, since it is larger than the sum of its proper divisors (74835003).

91011525 is a wasteful number, since it uses less digits than its factorization.

91011525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 24.

The square root of 91011525 is about 9539.9960691816. The cubic root of 91011525 is about 449.8131322883.

The spelling of 91011525 in words is "ninety-one million, eleven thousand, five hundred twenty-five".