91052131 has 2 divisors, whose sum is σ = 91052132. Its totient is φ = 91052130.

The previous prime is 91052111. The next prime is 91052167. The reversal of 91052131 is 13125019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91052131 - 2⁵ = 91052099 is a prime.

It is a super-2 number, since 2×91052131² = 16580981119282322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91052111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45526065 + 45526066.

It is an arithmetic number, because the mean of its divisors is an integer number (45526066).

Almost surely, 2^91052131 is an apocalyptic number.

91052131 is a deficient number, since it is larger than the sum of its proper divisors (1).

91052131 is an equidigital number, since it uses as much as digits as its factorization.

91052131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 91052131 is about 9542.1240297955. The cubic root of 91052131 is about 449.8800190418.

It can be divided in two parts, 9105 and 2131, that added together give a square (11236 = 106²).

The spelling of 91052131 in words is "ninety-one million, fifty-two thousand, one hundred thirty-one".