91312850 has 12 divisors (see below), whose sum is σ = 169841994. Its totient is φ = 36525120.

The previous prime is 91312847. The next prime is 91312867. The reversal of 91312850 is 5821319.

91312850 is nontrivially palindromic in base 3.

It can be written as a sum of positive squares in 3 ways, for example, as 67683529 + 23629321 = 8227^2 + 4861^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 913079 + ... + 913178.

Almost surely, 2^91312850 is an apocalyptic number.

91312850 is a deficient number, since it is larger than the sum of its proper divisors (78529144).

91312850 is a wasteful number, since it uses less digits than its factorization.

91312850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826269 (or 1826264 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 91312850 is about 9555.7757403572. The cubic root of 91312850 is about 450.3090058704.

The spelling of 91312850 in words is "ninety-one million, three hundred twelve thousand, eight hundred fifty".