22549001 has 4 divisors (see below), whose sum is σ = 22571904. Its totient is φ = 22526100.

The previous prime is 22548989. The next prime is 22549013. The reversal of 22549001 is 10094522.

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: 10094522 = 2 ⋅5047261.

It is an interprime number because it is at equal distance from previous prime (22548989) and next prime (22549013).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22549001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22549061) 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, 9905 + ... + 11966.

It is an arithmetic number, because the mean of its divisors is an integer number (5642976).

Almost surely, 2^22549001 is an apocalyptic number.

It is an amenable number.

22549001 is a deficient number, since it is larger than the sum of its proper divisors (22903).

22549001 is a wasteful number, since it uses less digits than its factorization.

22549001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22902.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 22549001 is about 4748.5788400320. The cubic root of 22549001 is about 282.5156009867.

The spelling of 22549001 in words is "twenty-two million, five hundred forty-nine thousand, one".