243875505 has 16 divisors (see below), whose sum is σ = 392460480. Its totient is φ = 129313728.

The previous prime is 243875491. The next prime is 243875519. The reversal of 243875505 is 505578342.

It is an interprime number because it is at equal distance from previous prime (243875491) and next prime (243875519).

It is not a de Polignac number, because 243875505 - 2⁶ = 243875441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44395 + ... + 49584.

It is an arithmetic number, because the mean of its divisors is an integer number (24528780).

Almost surely, 2^243875505 is an apocalyptic number.

It is an amenable number.

243875505 is a deficient number, since it is larger than the sum of its proper divisors (148584975).

243875505 is a wasteful number, since it uses less digits than its factorization.

243875505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94160.

The product of its (nonzero) digits is 168000, while the sum is 39.

The square root of 243875505 is about 15616.5138555313. The cubic root of 243875505 is about 624.7736823251.

It can be divided in two parts, 24387 and 5505, that added together give a palindrome (29892).

The spelling of 243875505 in words is "two hundred forty-three million, eight hundred seventy-five thousand, five hundred five".