91915741 has 2 divisors, whose sum is σ = 91915742. Its totient is φ = 91915740.

The previous prime is 91915723. The next prime is 91915771. The reversal of 91915741 is 14751919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81540900 + 10374841 = 9030^2 + 3221^2 .

It is a cyclic number.

It is not a de Polignac number, because 91915741 - 2⁵ = 91915709 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91915741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91915771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45957870 + 45957871.

It is an arithmetic number, because the mean of its divisors is an integer number (45957871).

Almost surely, 2^91915741 is an apocalyptic number.

It is an amenable number.

91915741 is a deficient number, since it is larger than the sum of its proper divisors (1).

91915741 is an equidigital number, since it uses as much as digits as its factorization.

91915741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 37.

The square root of 91915741 is about 9587.2697364787. The cubic root of 91915741 is about 451.2978843352.

The spelling of 91915741 in words is "ninety-one million, nine hundred fifteen thousand, seven hundred forty-one".