243228575 has 6 divisors (see below), whose sum is σ = 301603464. Its totient is φ = 194582840.

The previous prime is 243228551. The next prime is 243228577. The reversal of 243228575 is 575822342.

It is not a de Polignac number, because 243228575 - 2¹⁴ = 243212191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243228577) 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, 4864547 + ... + 4864596.

It is an arithmetic number, because the mean of its divisors is an integer number (50267244).

Almost surely, 2^243228575 is an apocalyptic number.

243228575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

243228575 is a deficient number, since it is larger than the sum of its proper divisors (58374889).

243228575 is an equidigital number, since it uses as much as digits as its factorization.

243228575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9729153 (or 9729148 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 243228575 is about 15595.7870913911. The cubic root of 243228575 is about 624.2207461586.

The spelling of 243228575 in words is "two hundred forty-three million, two hundred twenty-eight thousand, five hundred seventy-five".