91242955 has 16 divisors (see below), whose sum is σ = 114960384. Its totient is φ = 69388000.

The previous prime is 91242937. The next prime is 91242971. The reversal of 91242955 is 55924219.

It is not a de Polignac number, because 91242955 - 2⁹ = 91242443 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16830 + ... + 21580.

It is an arithmetic number, because the mean of its divisors is an integer number (7185024).

Almost surely, 2^91242955 is an apocalyptic number.

91242955 is a deficient number, since it is larger than the sum of its proper divisors (23717429).

91242955 is a wasteful number, since it uses less digits than its factorization.

91242955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4946.

The product of its digits is 32400, while the sum is 37.

The square root of 91242955 is about 9552.1178280002. The cubic root of 91242955 is about 450.1940808917.

The spelling of 91242955 in words is "ninety-one million, two hundred forty-two thousand, nine hundred fifty-five".