22312545 has 16 divisors (see below), whose sum is σ = 36460800. Its totient is φ = 11646464.

The previous prime is 22312501. The next prime is 22312547. The reversal of 22312545 is 54521322.

It is a cyclic number.

It is not a de Polignac number, because 22312545 - 2¹⁷ = 22181473 is a prime.

It is a super-3 number, since 3×22312545³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (22312547) 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, 15120 + ... + 16529.

It is an arithmetic number, because the mean of its divisors is an integer number (2278800).

Almost surely, 2^22312545 is an apocalyptic number.

It is an amenable number.

22312545 is a deficient number, since it is larger than the sum of its proper divisors (14148255).

22312545 is a wasteful number, since it uses less digits than its factorization.

22312545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31704.

The product of its digits is 2400, while the sum is 24.

The square root of 22312545 is about 4723.6156702255. The cubic root of 22312545 is about 281.5246127682.

Adding to 22312545 its reverse (54521322), we get a palindrome (76833867).

The spelling of 22312545 in words is "twenty-two million, three hundred twelve thousand, five hundred forty-five".