22553012 has 6 divisors (see below), whose sum is σ = 39467778. Its totient is φ = 11276504.

The previous prime is 22552991. The next prime is 22553023. The reversal of 22553012 is 21035522.

It can be written as a sum of positive squares in only one way, i.e., 21771556 + 781456 = 4666^2 + 884^2 .

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, 2819123 + ... + 2819130.

It is an arithmetic number, because the mean of its divisors is an integer number (6577963).

Almost surely, 2^22553012 is an apocalyptic number.

It is an amenable number.

22553012 is a deficient number, since it is larger than the sum of its proper divisors (16914766).

22553012 is a wasteful number, since it uses less digits than its factorization.

22553012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5638257 (or 5638255 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 22553012 is about 4749.0011581384. The cubic root of 22553012 is about 282.5323512172.

Adding to 22553012 its reverse (21035522), we get a palindrome (43588534).

The spelling of 22553012 in words is "twenty-two million, five hundred fifty-three thousand, twelve".