22453513 has 4 divisors (see below), whose sum is σ = 22464000. Its totient is φ = 22443028.

The previous prime is 22453493. The next prime is 22453523. The reversal of 22453513 is 31535422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31535422 = 2 ⋅15767711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22453513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22453523) 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, 745 + ... + 6742.

It is an arithmetic number, because the mean of its divisors is an integer number (5616000).

Almost surely, 2^22453513 is an apocalyptic number.

It is an amenable number.

22453513 is a deficient number, since it is larger than the sum of its proper divisors (10487).

22453513 is an equidigital number, since it uses as much as digits as its factorization.

22453513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486.

The product of its digits is 3600, while the sum is 25.

The square root of 22453513 is about 4738.5137965400. The cubic root of 22453513 is about 282.1162482013.

Adding to 22453513 its reverse (31535422), we get a palindrome (53988935).

The spelling of 22453513 in words is "twenty-two million, four hundred fifty-three thousand, five hundred thirteen".