22515452 has 6 divisors (see below), whose sum is σ = 39402048. Its totient is φ = 11257724.

The previous prime is 22515439. The next prime is 22515461. The reversal of 22515452 is 25451522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2814428 + ... + 2814435.

It is an arithmetic number, because the mean of its divisors is an integer number (6567008).

Almost surely, 2^22515452 is an apocalyptic number.

It is an amenable number.

22515452 is a deficient number, since it is larger than the sum of its proper divisors (16886596).

22515452 is a wasteful number, since it uses less digits than its factorization.

22515452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628867 (or 5628865 counting only the distinct ones).

The product of its digits is 4000, while the sum is 26.

The square root of 22515452 is about 4745.0449945180. The cubic root of 22515452 is about 282.3754200479.

Adding to 22515452 its reverse (25451522), we get a palindrome (47966974).

The spelling of 22515452 in words is "twenty-two million, five hundred fifteen thousand, four hundred fifty-two".