22149541 has 4 divisors (see below), whose sum is σ = 22177152. Its totient is φ = 22121932.

The previous prime is 22149503. The next prime is 22149559. The reversal of 22149541 is 14594122.

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 22149541 - 2¹³ = 22141349 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 (22149571) 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, 12565 + ... + 14218.

It is an arithmetic number, because the mean of its divisors is an integer number (5544288).

Almost surely, 2^22149541 is an apocalyptic number.

It is an amenable number.

22149541 is a deficient number, since it is larger than the sum of its proper divisors (27611).

22149541 is an equidigital number, since it uses as much as digits as its factorization.

22149541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27610.

The product of its digits is 2880, while the sum is 28.

The square root of 22149541 is about 4706.3298864402. The cubic root of 22149541 is about 280.8373784126.

The spelling of 22149541 in words is "twenty-two million, one hundred forty-nine thousand, five hundred forty-one".