1521252 has 18 divisors (see below), whose sum is σ = 3845478. Its totient is φ = 507072.

The previous prime is 1521241. The next prime is 1521269. The reversal of 1521252 is 2521251.

It can be written as a sum of positive squares in only one way, i.e., 1313316 + 207936 = 1146^2 + 456^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21093 + ... + 21164.

2^1521252 is an apocalyptic number.

1521252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1521252 is an abundant number, since it is smaller than the sum of its proper divisors (2324226).

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

1521252 is a wasteful number, since it uses less digits than its factorization.

1521252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42267 (or 42262 counting only the distinct ones).

The product of its digits is 200, while the sum is 18.

The square root of 1521252 is about 1233.3904491279. The cubic root of 1521252 is about 115.0095014204.

Subtracting 1521252 from its reverse (2521251), we obtain a palindrome (999999).

The spelling of 1521252 in words is "one million, five hundred twenty-one thousand, two hundred fifty-two".