91351841 has 8 divisors (see below), whose sum is σ = 104744640. Its totient is φ = 78044688.

The previous prime is 91351759. The next prime is 91351859. The reversal of 91351841 is 14815319.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91351841 - 2¹⁴ = 91335457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91351798 and 91351807.

It is not an unprimeable number, because it can be changed into a prime (91351861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19106 + ... + 23403.

It is an arithmetic number, because the mean of its divisors is an integer number (13093080).

Almost surely, 2^91351841 is an apocalyptic number.

It is an amenable number.

91351841 is a deficient number, since it is larger than the sum of its proper divisors (13392799).

91351841 is a wasteful number, since it uses less digits than its factorization.

91351841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42823.

The product of its digits is 4320, while the sum is 32.

The square root of 91351841 is about 9557.8157023454. The cubic root of 91351841 is about 450.3730914104.

The spelling of 91351841 in words is "ninety-one million, three hundred fifty-one thousand, eight hundred forty-one".