22173901 has 4 divisors (see below), whose sum is σ = 22183612. Its totient is φ = 22164192.

The previous prime is 22173887. The next prime is 22173917. The reversal of 22173901 is 10937122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2725801 + 19448100 = 1651^2 + 4410^2 .

It is a cyclic number.

It is not a de Polignac number, because 22173901 - 2⁵ = 22173869 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 (22173941) 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, 655 + ... + 6691.

It is an arithmetic number, because the mean of its divisors is an integer number (5545903).

Almost surely, 2^22173901 is an apocalyptic number.

It is an amenable number.

22173901 is a deficient number, since it is larger than the sum of its proper divisors (9711).

22173901 is an equidigital number, since it uses as much as digits as its factorization.

22173901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9710.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 22173901 is about 4708.9171791400. The cubic root of 22173901 is about 280.9402953999.

The spelling of 22173901 in words is "twenty-two million, one hundred seventy-three thousand, nine hundred one".