104521415 has 4 divisors (see below), whose sum is σ = 125425704. Its totient is φ = 83617128.

The previous prime is 104521409. The next prime is 104521421. The reversal of 104521415 is 514125401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 514125401 = 21601 ⋅23801.

It is an interprime number because it is at equal distance from previous prime (104521409) and next prime (104521421).

It is a cyclic number.

It is not a de Polignac number, because 104521415 - 2⁴ = 104521399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10452137 + ... + 10452146.

It is an arithmetic number, because the mean of its divisors is an integer number (31356426).

Almost surely, 2^104521415 is an apocalyptic number.

104521415 is a deficient number, since it is larger than the sum of its proper divisors (20904289).

104521415 is an equidigital number, since it uses as much as digits as its factorization.

104521415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20904288.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 104521415 is about 10223.5715383617. The cubic root of 104521415 is about 471.0515387847.

Adding to 104521415 its reverse (514125401), we get a palindrome (618646816).

The spelling of 104521415 in words is "one hundred four million, five hundred twenty-one thousand, four hundred fifteen".