104520215 has 4 divisors (see below), whose sum is σ = 125424264. Its totient is φ = 83616168.

The previous prime is 104520203. The next prime is 104520223. The reversal of 104520215 is 512025401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512025401 = 643 ⋅796307.

It is a cyclic number.

It is not a de Polignac number, because 104520215 - 2¹⁴ = 104503831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10452017 + ... + 10452026.

It is an arithmetic number, because the mean of its divisors is an integer number (31356066).

Almost surely, 2^104520215 is an apocalyptic number.

104520215 is a deficient number, since it is larger than the sum of its proper divisors (20904049).

104520215 is an equidigital number, since it uses as much as digits as its factorization.

104520215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20904048.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 104520215 is about 10223.5128502878. The cubic root of 104520215 is about 471.0497360791.

Adding to 104520215 its reverse (512025401), we get a palindrome (616545616).

The spelling of 104520215 in words is "one hundred four million, five hundred twenty thousand, two hundred fifteen".