243474563 has 2 divisors, whose sum is σ = 243474564. Its totient is φ = 243474562.

The previous prime is 243474529. The next prime is 243474587. The reversal of 243474563 is 365474342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243474563 - 2¹² = 243470467 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (243474163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121737281 + 121737282.

It is an arithmetic number, because the mean of its divisors is an integer number (121737282).

Almost surely, 2^243474563 is an apocalyptic number.

243474563 is a deficient number, since it is larger than the sum of its proper divisors (1).

243474563 is an equidigital number, since it uses as much as digits as its factorization.

243474563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 38.

The square root of 243474563 is about 15603.6714589868. The cubic root of 243474563 is about 624.4311094321.

The spelling of 243474563 in words is "two hundred forty-three million, four hundred seventy-four thousand, five hundred sixty-three".