1521522352 has 80 divisors (see below), whose sum is σ = 3559772160. Its totient is φ = 616137984.

The previous prime is 1521522349. The next prime is 1521522361. The reversal of 1521522352 is 2532251251.

It is a super-2 number, since 2×1521522352² = 4630060535271223808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1521522352.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147673 + ... + 157639.

It is an arithmetic number, because the mean of its divisors is an integer number (44497152).

Almost surely, 2^1521522352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1521522352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1779886080).

1521522352 is an abundant number, since it is smaller than the sum of its proper divisors (2038249808).

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

1521522352 is a wasteful number, since it uses less digits than its factorization.

1521522352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10058 (or 10052 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 1521522352 is about 39006.6962456448. The cubic root of 1521522352 is about 1150.1631405607.

The spelling of 1521522352 in words is "one billion, five hundred twenty-one million, five hundred twenty-two thousand, three hundred fifty-two".