1521002252 has 24 divisors (see below), whose sum is σ = 3318551040. Its totient is φ = 592598160.

The previous prime is 1521002239. The next prime is 1521002293. The reversal of 1521002252 is 2522001251.

It is a happy 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, 2468852 + ... + 2469467.

It is an arithmetic number, because the mean of its divisors is an integer number (138272960).

Almost surely, 2^1521002252 is an apocalyptic number.

It is an amenable number.

1521002252 is an abundant number, since it is smaller than the sum of its proper divisors (1797548788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1521002252 is a wasteful number, since it uses less digits than its factorization.

1521002252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4938341 (or 4938339 counting only the distinct ones).

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

The square root of 1521002252 is about 39000.0288717842. The cubic root of 1521002252 is about 1150.0320727035.

The spelling of 1521002252 in words is "one billion, five hundred twenty-one million, two thousand, two hundred fifty-two".