22152005 has 16 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 16704000.

The previous prime is 22151977. The next prime is 22152007. The reversal of 22152005 is 50025122.

It is not a de Polignac number, because 22152005 - 2⁸ = 22151749 is a prime.

It is a super-2 number, since 2×22152005² = 981422651040050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22152007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23381 + ... + 24309.

It is an arithmetic number, because the mean of its divisors is an integer number (1757700).

Almost surely, 2^22152005 is an apocalyptic number.

It is an amenable number.

22152005 is a deficient number, since it is larger than the sum of its proper divisors (5971195).

22152005 is a wasteful number, since it uses less digits than its factorization.

22152005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 22152005 is about 4706.5916542653. The cubic root of 22152005 is about 280.8477918359.

Adding to 22152005 its reverse (50025122), we get a palindrome (72177127).

The spelling of 22152005 in words is "twenty-two million, one hundred fifty-two thousand, five".