91057411 has 2 divisors, whose sum is σ = 91057412. Its totient is φ = 91057410.

The previous prime is 91057397. The next prime is 91057451. The reversal of 91057411 is 11475019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91057411 - 2¹⁵ = 91024643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91057411.

It is not a weakly prime, because it can be changed into another prime (91057451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45528705 + 45528706.

It is an arithmetic number, because the mean of its divisors is an integer number (45528706).

Almost surely, 2^91057411 is an apocalyptic number.

91057411 is a deficient number, since it is larger than the sum of its proper divisors (1).

91057411 is an equidigital number, since it uses as much as digits as its factorization.

91057411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 91057411 is about 9542.4006937458. The cubic root of 91057411 is about 449.8887148683. Note that the first 3 decimals are identical.

The spelling of 91057411 in words is "ninety-one million, fifty-seven thousand, four hundred eleven".