23220541 has 4 divisors (see below), whose sum is σ = 23390172. Its totient is φ = 23050912.

The previous prime is 23220529. The next prime is 23220551. The reversal of 23220541 is 14502232.

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 17884441 + 5336100 = 4229^2 + 2310^2 .

It is a cyclic number.

It is not a de Polignac number, because 23220541 - 2¹¹ = 23218493 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 (23220551) 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, 84610 + ... + 84883.

It is an arithmetic number, because the mean of its divisors is an integer number (5847543).

Almost surely, 2^23220541 is an apocalyptic number.

It is an amenable number.

23220541 is a deficient number, since it is larger than the sum of its proper divisors (169631).

23220541 is a wasteful number, since it uses less digits than its factorization.

23220541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169630.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 23220541 is about 4818.7696562504. The cubic root of 23220541 is about 285.2927780248.

Adding to 23220541 its reverse (14502232), we get a palindrome (37722773).

The spelling of 23220541 in words is "twenty-three million, two hundred twenty thousand, five hundred forty-one".