22242545 has 16 divisors (see below), whose sum is σ = 30436560. Its totient is φ = 15458304.

The previous prime is 22242533. The next prime is 22242553. The reversal of 22242545 is 54524222.

It can be written as a sum of positive squares in 8 ways, for example, as 274576 + 21967969 = 524^2 + 4687^2 .

It is not a de Polignac number, because 22242545 - 2⁸ = 22242289 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8960 + ... + 11169.

It is an arithmetic number, because the mean of its divisors is an integer number (1902285).

Almost surely, 2^22242545 is an apocalyptic number.

It is an amenable number.

22242545 is a deficient number, since it is larger than the sum of its proper divisors (8194015).

22242545 is a wasteful number, since it uses less digits than its factorization.

22242545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20164.

The product of its digits is 6400, while the sum is 26.

The square root of 22242545 is about 4716.2002714049. The cubic root of 22242545 is about 281.2299001274.

Adding to 22242545 its reverse (54524222), we get a palindrome (76766767).

The spelling of 22242545 in words is "twenty-two million, two hundred forty-two thousand, five hundred forty-five".