22115552 has 12 divisors (see below), whose sum is σ = 43540056. Its totient is φ = 11057760.

The previous prime is 22115549. The next prime is 22115557. The reversal of 22115552 is 25551122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22115557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345524 + ... + 345587.

It is an arithmetic number, because the mean of its divisors is an integer number (3628338).

Almost surely, 2^22115552 is an apocalyptic number.

It is an amenable number.

22115552 is a deficient number, since it is larger than the sum of its proper divisors (21424504).

22115552 is an equidigital number, since it uses as much as digits as its factorization.

22115552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691121 (or 691113 counting only the distinct ones).

The product of its digits is 1000, while the sum is 23.

The square root of 22115552 is about 4702.7175122476. The cubic root of 22115552 is about 280.6936543152.

Adding to 22115552 its reverse (25551122), we get a palindrome (47666674).

The spelling of 22115552 in words is "twenty-two million, one hundred fifteen thousand, five hundred fifty-two".