243055345 has 16 divisors (see below), whose sum is σ = 324237312. Its totient is φ = 173695680.

The previous prime is 243055327. The next prime is 243055349. The reversal of 243055345 is 543550342.

It is a happy number.

It is not a de Polignac number, because 243055345 - 2⁵ = 243055313 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243055349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58297 + ... + 62326.

It is an arithmetic number, because the mean of its divisors is an integer number (20264832).

Almost surely, 2^243055345 is an apocalyptic number.

It is an amenable number.

243055345 is a deficient number, since it is larger than the sum of its proper divisors (81181967).

243055345 is a wasteful number, since it uses less digits than its factorization.

243055345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120672.

The product of its (nonzero) digits is 36000, while the sum is 31.

The square root of 243055345 is about 15590.2323587559. The cubic root of 243055345 is about 624.0725187264.

It can be divided in two parts, 2430 and 55345, that added together give a palindrome (57775).

The spelling of 243055345 in words is "two hundred forty-three million, fifty-five thousand, three hundred forty-five".