120515521 has 8 divisors (see below), whose sum is σ = 138657600. Its totient is φ = 102604848.

The previous prime is 120515519. The next prime is 120515539. The reversal of 120515521 is 125515021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120515521 - 2¹ = 120515519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120515492 and 120515501.

It is not an unprimeable number, because it can be changed into a prime (120515501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56731 + ... + 58816.

It is an arithmetic number, because the mean of its divisors is an integer number (17332200).

Almost surely, 2^120515521 is an apocalyptic number.

It is an amenable number.

120515521 is a deficient number, since it is larger than the sum of its proper divisors (18142079).

120515521 is a wasteful number, since it uses less digits than its factorization.

120515521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115703.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 120515521 is about 10977.9561394642. The cubic root of 120515521 is about 493.9477303228.

Subtracting from 120515521 its product of nonzero digits (500), we obtain a palindrome (120515021).

The spelling of 120515521 in words is "one hundred twenty million, five hundred fifteen thousand, five hundred twenty-one".