91270851 has 64 divisors (see below), whose sum is σ = 155320320. Its totient is φ = 46500480.

The previous prime is 91270849. The next prime is 91270871. The reversal of 91270851 is 15807219.

It is not a de Polignac number, because 91270851 - 2¹ = 91270849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91270871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 581265 + ... + 581421.

It is an arithmetic number, because the mean of its divisors is an integer number (2426880).

Almost surely, 2^91270851 is an apocalyptic number.

91270851 is a deficient number, since it is larger than the sum of its proper divisors (64049469).

91270851 is a wasteful number, since it uses less digits than its factorization.

91270851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 91270851 is about 9553.5779161527. The cubic root of 91270851 is about 450.2399559748.

The spelling of 91270851 in words is "ninety-one million, two hundred seventy thousand, eight hundred fifty-one".