15222252 has 24 divisors (see below), whose sum is σ = 36007216. Its totient is φ = 5004288.

The previous prime is 15222247. The next prime is 15222257. The reversal of 15222252 is 25222251.

15222252 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15222247) and next prime (15222257).

It is not an unprimeable number, because it can be changed into a prime (15222257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7813 + ... + 9564.

Almost surely, 2^15222252 is an apocalyptic number.

15222252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15222252 is an abundant number, since it is smaller than the sum of its proper divisors (20784964).

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

15222252 is a wasteful number, since it uses less digits than its factorization.

15222252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17457 (or 17455 counting only the distinct ones).

The product of its digits is 800, while the sum is 21.

The square root of 15222252 is about 3901.5704530355. The cubic root of 15222252 is about 247.8332863245.

Subtracting 15222252 from its reverse (25222251), we obtain a palindrome (9999999).

The spelling of 15222252 in words is "fifteen million, two hundred twenty-two thousand, two hundred fifty-two".