91124513 has 8 divisors (see below), whose sum is σ = 97236000. Its totient is φ = 85144608.

The previous prime is 91124483. The next prime is 91124521. The reversal of 91124513 is 31542119.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91124513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91124533) 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, 31463 + ... + 34236.

It is an arithmetic number, because the mean of its divisors is an integer number (12154500).

Almost surely, 2^91124513 is an apocalyptic number.

It is an amenable number.

91124513 is a deficient number, since it is larger than the sum of its proper divisors (6111487).

91124513 is a wasteful number, since it uses less digits than its factorization.

91124513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65791.

The product of its digits is 1080, while the sum is 26.

The square root of 91124513 is about 9545.9160377619. The cubic root of 91124513 is about 449.9991983525. Note that the first 3 decimals are identical.

The spelling of 91124513 in words is "ninety-one million, one hundred twenty-four thousand, five hundred thirteen".