91522650 has 48 divisors (see below), whose sum is σ = 228297888. Its totient is φ = 24264000.

The previous prime is 91522643. The next prime is 91522661. The reversal of 91522650 is 5622519.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25465 + ... + 28835.

It is an arithmetic number, because the mean of its divisors is an integer number (4756206).

Almost surely, 2^91522650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91522650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114148944).

91522650 is an abundant number, since it is smaller than the sum of its proper divisors (136775238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91522650 is a wasteful number, since it uses less digits than its factorization.

91522650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3567 (or 3562 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 91522650 is about 9566.7470960614. The cubic root of 91522650 is about 450.6536180714.

The spelling of 91522650 in words is "ninety-one million, five hundred twenty-two thousand, six hundred fifty".