22515253 has 4 divisors (see below), whose sum is σ = 22575040. Its totient is φ = 22455468.

The previous prime is 22515239. The next prime is 22515257. The reversal of 22515253 is 35251522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35251522 = 2 ⋅17625761.

It is a cyclic number.

It is not a de Polignac number, because 22515253 - 2⁹ = 22514741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22515257) 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, 29325 + ... + 30082.

It is an arithmetic number, because the mean of its divisors is an integer number (5643760).

Almost surely, 2^22515253 is an apocalyptic number.

It is an amenable number.

22515253 is a deficient number, since it is larger than the sum of its proper divisors (59787).

22515253 is an equidigital number, since it uses as much as digits as its factorization.

22515253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59786.

The product of its digits is 3000, while the sum is 25.

The square root of 22515253 is about 4745.0240252290. The cubic root of 22515253 is about 282.3745881322.

Adding to 22515253 its reverse (35251522), we get a palindrome (57766775).

The spelling of 22515253 in words is "twenty-two million, five hundred fifteen thousand, two hundred fifty-three".