5104123521 has 32 divisors (see below), whose sum is σ = 7993666560. Its totient is φ = 2836257984.

The previous prime is 5104123517. The next prime is 5104123543. The reversal of 5104123521 is 1253214015.

It is a happy number.

It is not a de Polignac number, because 5104123521 - 2² = 5104123517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5104123491 and 5104123500.

It is not an unprimeable number, because it can be changed into a prime (5104122521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 194446 + ... + 219128.

It is an arithmetic number, because the mean of its divisors is an integer number (249802080).

Almost surely, 2^5104123521 is an apocalyptic number.

It is an amenable number.

5104123521 is a deficient number, since it is larger than the sum of its proper divisors (2889543039).

5104123521 is a wasteful number, since it uses less digits than its factorization.

5104123521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24965.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 5104123521 is about 71443.1488737724. The cubic root of 5104123521 is about 1721.7644055089.

Adding to 5104123521 its reverse (1253214015), we get a palindrome (6357337536).

The spelling of 5104123521 in words is "five billion, one hundred four million, one hundred twenty-three thousand, five hundred twenty-one".