43235505253 has 4 divisors (see below), whose sum is σ = 44404032460. Its totient is φ = 42066978048.

The previous prime is 43235505217. The next prime is 43235505277. The reversal of 43235505253 is 35250553234.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31585109284 + 11650395969 = 177722^2 + 107937^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43235505253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1168527169 = 43235505253 / (4 + 3 + 2 + 3 + 5 + 5 + 0 + 5 + 2 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43235505353) 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, 584263548 + ... + 584263621.

It is an arithmetic number, because the mean of its divisors is an integer number (11101008115).

Almost surely, 2^43235505253 is an apocalyptic number.

It is an amenable number.

43235505253 is a deficient number, since it is larger than the sum of its proper divisors (1168527207).

43235505253 is a wasteful number, since it uses less digits than its factorization.

43235505253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1168527206.

The product of its (nonzero) digits is 270000, while the sum is 37.

The spelling of 43235505253 in words is "forty-three billion, two hundred thirty-five million, five hundred five thousand, two hundred fifty-three".