22250551 has 4 divisors (see below), whose sum is σ = 22281400. Its totient is φ = 22219704.

The previous prime is 22250537. The next prime is 22250563. The reversal of 22250551 is 15505222.

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 22250551 - 2²³ = 13861943 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 (22250521) 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, 14316 + ... + 15793.

It is an arithmetic number, because the mean of its divisors is an integer number (5570350).

Almost surely, 2^22250551 is an apocalyptic number.

22250551 is a deficient number, since it is larger than the sum of its proper divisors (30849).

22250551 is an equidigital number, since it uses as much as digits as its factorization.

22250551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30848.

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 22250551 is about 4717.0489715499. The cubic root of 22250551 is about 281.2636381206.

Adding to 22250551 its reverse (15505222), we get a palindrome (37755773).

It can be divided in two parts, 22250 and 551, that added together give a square (22801 = 151²).

The spelling of 22250551 in words is "twenty-two million, two hundred fifty thousand, five hundred fifty-one".