22152745 has 16 divisors (see below), whose sum is σ = 27433728. Its totient is φ = 17163520.

The previous prime is 22152719. The next prime is 22152791. The reversal of 22152745 is 54725122.

It is not a de Polignac number, because 22152745 - 2²¹ = 20055593 is a prime.

It is a super-2 number, since 2×22152745² = 981488222070050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24705 + ... + 25585.

It is an arithmetic number, because the mean of its divisors is an integer number (1714608).

Almost surely, 2^22152745 is an apocalyptic number.

It is an amenable number.

22152745 is a deficient number, since it is larger than the sum of its proper divisors (5280983).

22152745 is a wasteful number, since it uses less digits than its factorization.

22152745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 5600, while the sum is 28.

The square root of 22152745 is about 4706.6702667597. The cubic root of 22152745 is about 280.8509190931.

Adding to 22152745 its reverse (54725122), we get a palindrome (76877867).

The spelling of 22152745 in words is "twenty-two million, one hundred fifty-two thousand, seven hundred forty-five".