15505252 has 12 divisors (see below), whose sum is σ = 31010560. Its totient is φ = 6645096.

The previous prime is 15505229. The next prime is 15505271. The reversal of 15505252 is 25250551.

It is a happy number.

15505252 is an admirable number.

It is a super-3 number, since 3×15505252³ (a number of 23 digits) contains 333 as substring.

It is a nialpdrome in base 16.

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, 276852 + ... + 276907.

Almost surely, 2^15505252 is an apocalyptic number.

It is an amenable number.

15505252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

15505252 is a wasteful number, since it uses less digits than its factorization.

15505252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553770 (or 553768 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 15505252 is about 3937.6708851807. The cubic root of 15505252 is about 249.3597054918.

The spelling of 15505252 in words is "fifteen million, five hundred five thousand, two hundred fifty-two".