91282261 has 4 divisors (see below), whose sum is σ = 104322592. Its totient is φ = 78241932.

The previous prime is 91282253. The next prime is 91282283. The reversal of 91282261 is 16228219.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16228219 = 7 ⋅2318317.

It is a cyclic number.

It is not a de Polignac number, because 91282261 - 2³ = 91282253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91285261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6520155 + ... + 6520168.

It is an arithmetic number, because the mean of its divisors is an integer number (26080648).

Almost surely, 2^91282261 is an apocalyptic number.

It is an amenable number.

91282261 is a deficient number, since it is larger than the sum of its proper divisors (13040331).

91282261 is a wasteful number, since it uses less digits than its factorization.

91282261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13040330.

The product of its digits is 3456, while the sum is 31.

The square root of 91282261 is about 9554.1750559638. The cubic root of 91282261 is about 450.2587170717.

The spelling of 91282261 in words is "ninety-one million, two hundred eighty-two thousand, two hundred sixty-one".