104137521 has 16 divisors (see below), whose sum is σ = 144292800. Its totient is φ = 66725568.

The previous prime is 104137513. The next prime is 104137541. The reversal of 104137521 is 125731401.

It is not a de Polignac number, because 104137521 - 2³ = 104137513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104137491 and 104137500.

It is not an unprimeable number, because it can be changed into a prime (104137541) 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 15 ways as a sum of consecutive naturals, for example, 17310 + ... + 22536.

It is an arithmetic number, because the mean of its divisors is an integer number (9018300).

Almost surely, 2^104137521 is an apocalyptic number.

It is an amenable number.

104137521 is a deficient number, since it is larger than the sum of its proper divisors (40155279).

104137521 is a wasteful number, since it uses less digits than its factorization.

104137521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5488.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 104137521 is about 10204.7793214748. The cubic root of 104137521 is about 470.4741269512.

Adding to 104137521 its reverse (125731401), we get a palindrome (229868922).

The spelling of 104137521 in words is "one hundred four million, one hundred thirty-seven thousand, five hundred twenty-one".