91270755 has 12 divisors (see below), whose sum is σ = 158202720. Its totient is φ = 48677712.

The previous prime is 91270747. The next prime is 91270783. The reversal of 91270755 is 55707219.

It is not a de Polignac number, because 91270755 - 2³ = 91270747 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1014075 + ... + 1014164.

It is an arithmetic number, because the mean of its divisors is an integer number (13183560).

Almost surely, 2^91270755 is an apocalyptic number.

91270755 is a deficient number, since it is larger than the sum of its proper divisors (66931965).

91270755 is a wasteful number, since it uses less digits than its factorization.

91270755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028250 (or 2028247 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 36.

The square root of 91270755 is about 9553.5728918557. The cubic root of 91270755 is about 450.2397981185.

The spelling of 91270755 in words is "ninety-one million, two hundred seventy thousand, seven hundred fifty-five".