243554450 has 12 divisors (see below), whose sum is σ = 453011370. Its totient is φ = 97421760.

The previous prime is 243554431. The next prime is 243554471. The reversal of 243554450 is 54455342.

It can be written as a sum of positive squares in 3 ways, for example, as 113571649 + 129982801 = 10657^2 + 11401^2 .

It is a super-2 number, since 2×243554450² = 118637540229605000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2435495 + ... + 2435594.

Almost surely, 2^243554450 is an apocalyptic number.

243554450 is a deficient number, since it is larger than the sum of its proper divisors (209456920).

243554450 is a wasteful number, since it uses less digits than its factorization.

243554450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4871101 (or 4871096 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 243554450 is about 15606.2311273414. The cubic root of 243554450 is about 624.4993964742.

The spelling of 243554450 in words is "two hundred forty-three million, five hundred fifty-four thousand, four hundred fifty".