104915591 has 18 divisors (see below), whose sum is σ = 119549976. Its totient is φ = 91999600.

The previous prime is 104915561. The next prime is 104915593. The reversal of 104915591 is 195519401.

It is a de Polignac number, because none of the positive numbers 2^k-104915591 is a prime.

It is a super-2 number, since 2×104915591² = 22014562469758562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104915593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 101246 + ... + 102276.

Almost surely, 2^104915591 is an apocalyptic number.

104915591 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

104915591 is a deficient number, since it is larger than the sum of its proper divisors (14634385).

104915591 is a wasteful number, since it uses less digits than its factorization.

104915591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 35.

The square root of 104915591 is about 10242.8312004055. The cubic root of 104915591 is about 471.6429464168.

The spelling of 104915591 in words is "one hundred four million, nine hundred fifteen thousand, five hundred ninety-one".