222543251 has 6 divisors (see below), whose sum is σ = 258876900. Its totient is φ = 190751316.

The previous prime is 222543227. The next prime is 222543283. The reversal of 222543251 is 152345222.

It is not a de Polignac number, because 222543251 - 2¹⁴ = 222526867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222543251.

It is not an unprimeable number, because it can be changed into a prime (222593251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2270801 + ... + 2270898.

It is an arithmetic number, because the mean of its divisors is an integer number (43146150).

Almost surely, 2^222543251 is an apocalyptic number.

222543251 is a deficient number, since it is larger than the sum of its proper divisors (36333649).

222543251 is an equidigital number, since it uses as much as digits as its factorization.

222543251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541713 (or 4541706 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 222543251 is about 14917.8835965428. The cubic root of 222543251 is about 605.9983979379.

Adding to 222543251 its reverse (152345222), we get a palindrome (374888473).

The spelling of 222543251 in words is "two hundred twenty-two million, five hundred forty-three thousand, two hundred fifty-one".