22137452 has 6 divisors (see below), whose sum is σ = 38740548. Its totient is φ = 11068724.

The previous prime is 22137439. The next prime is 22137457. The reversal of 22137452 is 25473122.

It is not an unprimeable number, because it can be changed into a prime (22137457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2767178 + ... + 2767185.

It is an arithmetic number, because the mean of its divisors is an integer number (6456758).

Almost surely, 2^22137452 is an apocalyptic number.

It is an amenable number.

22137452 is a deficient number, since it is larger than the sum of its proper divisors (16603096).

22137452 is a wasteful number, since it uses less digits than its factorization.

22137452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5534367 (or 5534365 counting only the distinct ones).

The product of its digits is 3360, while the sum is 26.

The square root of 22137452 is about 4705.0453770394. The cubic root of 22137452 is about 280.7862763617.

It can be divided in two parts, 221 and 37452, that added together give a palindrome (37673).

The spelling of 22137452 in words is "twenty-two million, one hundred thirty-seven thousand, four hundred fifty-two".