91158361 has 8 divisors (see below), whose sum is σ = 108710784. Its totient is φ = 74738400.

The previous prime is 91158359. The next prime is 91158373. The reversal of 91158361 is 16385119.

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 91158361 - 2¹ = 91158359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91158311) 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, 282940 + ... + 283261.

It is an arithmetic number, because the mean of its divisors is an integer number (13588848).

Almost surely, 2^91158361 is an apocalyptic number.

It is an amenable number.

91158361 is a deficient number, since it is larger than the sum of its proper divisors (17552423).

91158361 is a wasteful number, since it uses less digits than its factorization.

91158361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566231.

The product of its digits is 6480, while the sum is 34.

The square root of 91158361 is about 9547.6887779190. The cubic root of 91158361 is about 450.0549085262.

It can be divided in two parts, 91158 and 361, that added together give a palindrome (91519).

The spelling of 91158361 in words is "ninety-one million, one hundred fifty-eight thousand, three hundred sixty-one".