104191557 has 4 divisors (see below), whose sum is σ = 138922080. Its totient is φ = 69461036.

The previous prime is 104191553. The next prime is 104191559. The reversal of 104191557 is 755191401.

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: 755191401 = 3 ⋅251730467.

It is a cyclic number.

It is not a de Polignac number, because 104191557 - 2² = 104191553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104191553) 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, 17365257 + ... + 17365262.

It is an arithmetic number, because the mean of its divisors is an integer number (34730520).

Almost surely, 2^104191557 is an apocalyptic number.

It is an amenable number.

104191557 is a deficient number, since it is larger than the sum of its proper divisors (34730523).

104191557 is an equidigital number, since it uses as much as digits as its factorization.

104191557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34730522.

The product of its (nonzero) digits is 6300, while the sum is 33.

The square root of 104191557 is about 10207.4265610878. The cubic root of 104191557 is about 470.5554877767. Note that the first 3 decimals are identical.

The spelling of 104191557 in words is "one hundred four million, one hundred ninety-one thousand, five hundred fifty-seven".