91755331 has 2 divisors, whose sum is σ = 91755332. Its totient is φ = 91755330.

The previous prime is 91755317. The next prime is 91755337. The reversal of 91755331 is 13355719.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91755331 - 2⁷ = 91755203 is a prime.

It is a super-2 number, since 2×91755331² = 16838081533839122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91755337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45877665 + 45877666.

It is an arithmetic number, because the mean of its divisors is an integer number (45877666).

Almost surely, 2^91755331 is an apocalyptic number.

91755331 is a deficient number, since it is larger than the sum of its proper divisors (1).

91755331 is an equidigital number, since it uses as much as digits as its factorization.

91755331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14175, while the sum is 34.

The square root of 91755331 is about 9578.9003022268. The cubic root of 91755331 is about 451.0351986530.

The spelling of 91755331 in words is "ninety-one million, seven hundred fifty-five thousand, three hundred thirty-one".