91357241 has 6 divisors (see below), whose sum is σ = 93533130. Its totient is φ = 89230848.

The previous prime is 91357207. The next prime is 91357261. The reversal of 91357241 is 14275319.

It can be written as a sum of positive squares in only one way, i.e., 73960000 + 17397241 = 8600^2 + 4171^2 .

It is not a de Polignac number, because 91357241 - 2⁶ = 91357177 is a prime.

It is a super-2 number, since 2×91357241² = 16692290966264162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91357198 and 91357207.

It is not an unprimeable number, because it can be changed into a prime (91357261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22856 + ... + 26553.

It is an arithmetic number, because the mean of its divisors is an integer number (15588855).

Almost surely, 2^91357241 is an apocalyptic number.

It is an amenable number.

91357241 is a deficient number, since it is larger than the sum of its proper divisors (2175889).

91357241 is an equidigital number, since it uses as much as digits as its factorization.

91357241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49495 (or 49452 counting only the distinct ones).

The product of its digits is 7560, while the sum is 32.

The square root of 91357241 is about 9558.0981894936. The cubic root of 91357241 is about 450.3819654034.

The spelling of 91357241 in words is "ninety-one million, three hundred fifty-seven thousand, two hundred forty-one".