91955901 has 16 divisors (see below), whose sum is σ = 125680896. Its totient is φ = 59781696.

The previous prime is 91955891. The next prime is 91955911. The reversal of 91955901 is 10955919.

It is an interprime number because it is at equal distance from previous prime (91955891) and next prime (91955911).

It is not a de Polignac number, because 91955901 - 2⁵ = 91955869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91955901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91955911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25836 + ... + 29178.

It is an arithmetic number, because the mean of its divisors is an integer number (7855056).

Almost surely, 2^91955901 is an apocalyptic number.

It is an amenable number.

91955901 is a deficient number, since it is larger than the sum of its proper divisors (33724995).

91955901 is a wasteful number, since it uses less digits than its factorization.

91955901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572.

The product of its (nonzero) digits is 18225, while the sum is 39.

The square root of 91955901 is about 9589.3639517958. The cubic root of 91955901 is about 451.3636020744.

The spelling of 91955901 in words is "ninety-one million, nine hundred fifty-five thousand, nine hundred one".