253745743 has 4 divisors (see below), whose sum is σ = 253778320. Its totient is φ = 253713168.

The previous prime is 253745731. The next prime is 253745747. The reversal of 253745743 is 347547352.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 253745743 - 2¹⁷ = 253614671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253745696 and 253745705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253745747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3046 + ... + 22732.

It is an arithmetic number, because the mean of its divisors is an integer number (63444580).

Almost surely, 2^253745743 is an apocalyptic number.

253745743 is a deficient number, since it is larger than the sum of its proper divisors (32577).

253745743 is a wasteful number, since it uses less digits than its factorization.

253745743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32576.

The product of its digits is 352800, while the sum is 40.

The square root of 253745743 is about 15929.3987017715. The cubic root of 253745743 is about 633.0911681424.

The spelling of 253745743 in words is "two hundred fifty-three million, seven hundred forty-five thousand, seven hundred forty-three".