22551901 has 4 divisors (see below), whose sum is σ = 22568704. Its totient is φ = 22535100.

The previous prime is 22551899. The next prime is 22551929. The reversal of 22551901 is 10915522.

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 22551901 - 2¹ = 22551899 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 (22551931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6195 + ... + 9136.

It is an arithmetic number, because the mean of its divisors is an integer number (5642176).

Almost surely, 2^22551901 is an apocalyptic number.

It is an amenable number.

22551901 is a deficient number, since it is larger than the sum of its proper divisors (16803).

22551901 is a wasteful number, since it uses less digits than its factorization.

22551901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16802.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 22551901 is about 4748.8841847322. The cubic root of 22551901 is about 282.5277117985.

The spelling of 22551901 in words is "twenty-two million, five hundred fifty-one thousand, nine hundred one".