22145413 has 4 divisors (see below), whose sum is σ = 22616640. Its totient is φ = 21674188.

The previous prime is 22145411. The next prime is 22145429. The reversal of 22145413 is 31454122.

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.

It is a cyclic number.

It is not a de Polignac number, because 22145413 - 2¹ = 22145411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145411) 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, 235543 + ... + 235636.

It is an arithmetic number, because the mean of its divisors is an integer number (5654160).

Almost surely, 2^22145413 is an apocalyptic number.

It is an amenable number.

22145413 is a deficient number, since it is larger than the sum of its proper divisors (471227).

22145413 is an equidigital number, since it uses as much as digits as its factorization.

22145413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471226.

The product of its digits is 960, while the sum is 22.

The square root of 22145413 is about 4705.8913077121. The cubic root of 22145413 is about 280.8199308166.

Adding to 22145413 its reverse (31454122), we get a palindrome (53599535).

The spelling of 22145413 in words is "twenty-two million, one hundred forty-five thousand, four hundred thirteen".