243525103 has 4 divisors (see below), whose sum is σ = 243658800. Its totient is φ = 243391408.

The previous prime is 243525077. The next prime is 243525133. The reversal of 243525103 is 301525342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301525342 = 2 ⋅150762671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243525103 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 (243525133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64078 + ... + 67771.

It is an arithmetic number, because the mean of its divisors is an integer number (60914700).

Almost surely, 2^243525103 is an apocalyptic number.

243525103 is a deficient number, since it is larger than the sum of its proper divisors (133697).

243525103 is a wasteful number, since it uses less digits than its factorization.

243525103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133696.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 243525103 is about 15605.2908656007. The cubic root of 243525103 is about 624.4743125283.

The spelling of 243525103 in words is "two hundred forty-three million, five hundred twenty-five thousand, one hundred three".