91052500 has 180 divisors, whose sum is σ = 255943072. Its totient is φ = 27720000.

The previous prime is 91052497. The next prime is 91052501. The reversal of 91052500 is 525019.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91052501) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2117479 + ... + 2117521.

Almost surely, 2^91052500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91052500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127971536).

91052500 is an abundant number, since it is smaller than the sum of its proper divisors (164890572).

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

91052500 is a wasteful number, since it uses less digits than its factorization.

91052500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 91052500 is about 9542.1433650936. The cubic root of 91052500 is about 449.8806267724.

Adding to 91052500 its reverse (525019), we get a palindrome (91577519).

The spelling of 91052500 in words is "ninety-one million, fifty-two thousand, five hundred".