91357441 has 4 divisors (see below), whose sum is σ = 104408512. Its totient is φ = 78306372.

The previous prime is 91357423. The next prime is 91357451. The reversal of 91357441 is 14475319.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14475319 = 229 ⋅63211.

It is a cyclic number.

It is not a de Polignac number, because 91357441 - 2⁷ = 91357313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91357397 and 91357406.

It is not an unprimeable number, because it can be changed into a prime (91357451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6525525 + ... + 6525538.

It is an arithmetic number, because the mean of its divisors is an integer number (26102128).

Almost surely, 2^91357441 is an apocalyptic number.

It is an amenable number.

91357441 is a deficient number, since it is larger than the sum of its proper divisors (13051071).

91357441 is a wasteful number, since it uses less digits than its factorization.

91357441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13051070.

The product of its digits is 15120, while the sum is 34.

The square root of 91357441 is about 9558.1086518202. The cubic root of 91357441 is about 450.3822940631.

The spelling of 91357441 in words is "ninety-one million, three hundred fifty-seven thousand, four hundred forty-one".