22461245 has 4 divisors (see below), whose sum is σ = 26953500. Its totient is φ = 17968992.

The previous prime is 22461239. The next prime is 22461247. The reversal of 22461245 is 54216422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13823524 + 8637721 = 3718^2 + 2939^2 .

It is a cyclic number.

It is not a de Polignac number, because 22461245 - 2¹⁴ = 22444861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22461247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246120 + ... + 2246129.

It is an arithmetic number, because the mean of its divisors is an integer number (6738375).

Almost surely, 2^22461245 is an apocalyptic number.

It is an amenable number.

22461245 is a deficient number, since it is larger than the sum of its proper divisors (4492255).

22461245 is an equidigital number, since it uses as much as digits as its factorization.

22461245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492254.

The product of its digits is 3840, while the sum is 26.

The square root of 22461245 is about 4739.3295939405. The cubic root of 22461245 is about 282.1486272845.

Adding to 22461245 its reverse (54216422), we get a palindrome (76677667).

The spelling of 22461245 in words is "twenty-two million, four hundred sixty-one thousand, two hundred forty-five".