1517515252 has 24 divisors (see below), whose sum is σ = 3023036352. Its totient is φ = 659788800.

The previous prime is 1517515249. The next prime is 1517515261. The reversal of 1517515252 is 2525157151.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748749 + ... + 750772.

It is an arithmetic number, because the mean of its divisors is an integer number (125959848).

Almost surely, 2^1517515252 is an apocalyptic number.

It is an amenable number.

1517515252 is a deficient number, since it is larger than the sum of its proper divisors (1505521100).

1517515252 is a wasteful number, since it uses less digits than its factorization.

1517515252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499559 (or 1499557 counting only the distinct ones).

The product of its digits is 17500, while the sum is 34.

The square root of 1517515252 is about 38955.2981249021. The cubic root of 1517515252 is about 1149.1525582773.

The spelling of 1517515252 in words is "one billion, five hundred seventeen million, five hundred fifteen thousand, two hundred fifty-two".