1521535252 has 12 divisors (see below), whose sum is σ = 2663053120. Its totient is φ = 760662936.

The previous prime is 1521535243. The next prime is 1521535271. The reversal of 1521535252 is 2525351251.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13063 + ... + 56689.

Almost surely, 2^1521535252 is an apocalyptic number.

It is an amenable number.

1521535252 is a deficient number, since it is larger than the sum of its proper divisors (1141517868).

1521535252 is a wasteful number, since it uses less digits than its factorization.

1521535252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52350 (or 52348 counting only the distinct ones).

The product of its digits is 15000, while the sum is 31.

The square root of 1521535252 is about 39006.8616015183. The cubic root of 1521535252 is about 1150.1663910469.

The spelling of 1521535252 in words is "one billion, five hundred twenty-one million, five hundred thirty-five thousand, two hundred fifty-two".