222200551 has 4 divisors (see below), whose sum is σ = 222250000. Its totient is φ = 222151104.

The previous prime is 222200521. The next prime is 222200567. The reversal of 222200551 is 155002222.

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 222200551 - 2²³ = 213811943 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 (222200501) 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, 17226 + ... + 27223.

It is an arithmetic number, because the mean of its divisors is an integer number (55562500).

Almost surely, 2^222200551 is an apocalyptic number.

222200551 is a deficient number, since it is larger than the sum of its proper divisors (49449).

222200551 is an equidigital number, since it uses as much as digits as its factorization.

222200551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49448.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 222200551 is about 14906.3929573858. The cubic root of 222200551 is about 605.6871740252.

Adding to 222200551 its reverse (155002222), we get a palindrome (377202773).

The spelling of 222200551 in words is "two hundred twenty-two million, two hundred thousand, five hundred fifty-one".