22325551 has 4 divisors (see below), whose sum is σ = 23500600. Its totient is φ = 21150504.

The previous prime is 22325543. The next prime is 22325579. The reversal of 22325551 is 15552322.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22325551 - 2³ = 22325543 is a prime.

It is a super-3 number, since 3×22325551³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22325531) 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, 587496 + ... + 587533.

It is an arithmetic number, because the mean of its divisors is an integer number (5875150).

Almost surely, 2^22325551 is an apocalyptic number.

22325551 is a deficient number, since it is larger than the sum of its proper divisors (1175049).

22325551 is a wasteful number, since it uses less digits than its factorization.

22325551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175048.

The product of its digits is 3000, while the sum is 25.

The square root of 22325551 is about 4724.9921693057. The cubic root of 22325551 is about 281.5793024493.

Adding to 22325551 its reverse (15552322), we get a palindrome (37877873).

The spelling of 22325551 in words is "twenty-two million, three hundred twenty-five thousand, five hundred fifty-one".