91955000 has 80 divisors (see below), whose sum is σ = 220148280. Its totient is φ = 35984000.

The previous prime is 91954987. The next prime is 91955029. The reversal of 91955000 is 55919.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 264827 + ... + 265173.

Almost surely, 2^91955000 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 91955000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110074140).

91955000 is an abundant number, since it is smaller than the sum of its proper divisors (128193280).

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

91955000 is a wasteful number, since it uses less digits than its factorization.

91955000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 2025, while the sum is 29.

The square root of 91955000 is about 9589.3169725481. The cubic root of 91955000 is about 451.3621278897.

The spelling of 91955000 in words is "ninety-one million, nine hundred fifty-five thousand".