1521516252 has 48 divisors (see below), whose sum is σ = 3763095840. Its totient is φ = 476823552.

The previous prime is 1521516251. The next prime is 1521516259. The reversal of 1521516252 is 2526151251.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521516251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214588 + ... + 221564.

It is an arithmetic number, because the mean of its divisors is an integer number (78397830).

Almost surely, 2^1521516252 is an apocalyptic number.

1521516252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1521516252 is an abundant number, since it is smaller than the sum of its proper divisors (2241579588).

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

1521516252 is a wasteful number, since it uses less digits than its factorization.

1521516252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8070 (or 8068 counting only the distinct ones).

The product of its digits is 6000, while the sum is 30.

The square root of 1521516252 is about 39006.6180538636. The cubic root of 1521516252 is about 1150.1616035026.

The spelling of 1521516252 in words is "one billion, five hundred twenty-one million, five hundred sixteen thousand, two hundred fifty-two".