15252222 has 8 divisors (see below), whose sum is σ = 30504456. Its totient is φ = 5084072.

The previous prime is 15252203. The next prime is 15252227. The reversal of 15252222 is 22225251.

It is a sphenic number, since it is the product of 3 distinct primes.

15252222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15252227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271013 + ... + 1271024.

It is an arithmetic number, because the mean of its divisors is an integer number (3813057).

Almost surely, 2^15252222 is an apocalyptic number.

15252222 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.

15252222 is a wasteful number, since it uses less digits than its factorization.

15252222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542042.

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

The square root of 15252222 is about 3905.4093255381. The cubic root of 15252222 is about 247.9958267595.

Adding to 15252222 its reverse (22225251), we get a palindrome (37477473).

The spelling of 15252222 in words is "fifteen million, two hundred fifty-two thousand, two hundred twenty-two".