104131557 has 24 divisors (see below), whose sum is σ = 157405248. Its totient is φ = 66211200.

The previous prime is 104131553. The next prime is 104131561. The reversal of 104131557 is 755131401.

104131557 is a `hidden beast` number, since 104 + 1 + 3 + 1 + 557 = 666.

It is an interprime number because it is at equal distance from previous prime (104131553) and next prime (104131561).

It is not a de Polignac number, because 104131557 - 2² = 104131553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104131557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104131553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117757 + ... + 118637.

It is an arithmetic number, because the mean of its divisors is an integer number (6558552).

Almost surely, 2^104131557 is an apocalyptic number.

It is an amenable number.

104131557 is a deficient number, since it is larger than the sum of its proper divisors (53273691).

104131557 is a wasteful number, since it uses less digits than its factorization.

104131557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481 (or 1478 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 104131557 is about 10204.4871012707. The cubic root of 104131557 is about 470.4651453621.

Adding to 104131557 its reverse (755131401), we get a palindrome (859262958).

The spelling of 104131557 in words is "one hundred four million, one hundred thirty-one thousand, five hundred fifty-seven".