243553422 has 48 divisors (see below), whose sum is σ = 584934912. Its totient is φ = 67339440.

The previous prime is 243553421. The next prime is 243553423. The reversal of 243553422 is 224355342.

243553422 is nontrivially palindromic in base 16.

It is an interprime number because it is at equal distance from previous prime (243553421) and next prime (243553423).

It is a self number, because there is not a number n which added to its sum of digits gives 243553422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243553421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4248 + ... + 22475.

It is an arithmetic number, because the mean of its divisors is an integer number (12186144).

Almost surely, 2^243553422 is an apocalyptic number.

243553422 is an abundant number, since it is smaller than the sum of its proper divisors (341381490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243553422 is a wasteful number, since it uses less digits than its factorization.

243553422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26773 (or 26766 counting only the distinct ones).

The product of its digits is 28800, while the sum is 30.

The square root of 243553422 is about 15606.1981917442. The cubic root of 243553422 is about 624.4985178393.

The spelling of 243553422 in words is "two hundred forty-three million, five hundred fifty-three thousand, four hundred twenty-two".