22013573 has 4 divisors (see below), whose sum is σ = 22105920. Its totient is φ = 21921228.

The previous prime is 22013567. The next prime is 22013591. The reversal of 22013573 is 37531022.

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 an emirpimes, since its reverse is a distinct semiprime: 37531022 = 2 ⋅18765511.

It is a cyclic number.

It is not a de Polignac number, because 22013573 - 2¹⁴ = 21997189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22013273) 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, 45815 + ... + 46292.

It is an arithmetic number, because the mean of its divisors is an integer number (5526480).

Almost surely, 2^22013573 is an apocalyptic number.

It is an amenable number.

22013573 is a deficient number, since it is larger than the sum of its proper divisors (92347).

22013573 is an equidigital number, since it uses as much as digits as its factorization.

22013573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92346.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 22013573 is about 4691.8624233880. The cubic root of 22013573 is about 280.2615455824.

Adding to 22013573 its reverse (37531022), we get a palindrome (59544595).

The spelling of 22013573 in words is "twenty-two million, thirteen thousand, five hundred seventy-three".