253683543 has 4 divisors (see below), whose sum is σ = 338244728. Its totient is φ = 169122360.

The previous prime is 253683511. The next prime is 253683557. The reversal of 253683543 is 345386352.

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

It is not a de Polignac number, because 253683543 - 2⁵ = 253683511 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 (253683593) 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, 42280588 + ... + 42280593.

It is an arithmetic number, because the mean of its divisors is an integer number (84561182).

Almost surely, 2^253683543 is an apocalyptic number.

253683543 is a deficient number, since it is larger than the sum of its proper divisors (84561185).

253683543 is an equidigital number, since it uses as much as digits as its factorization.

253683543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84561184.

The product of its digits is 259200, while the sum is 39.

The square root of 253683543 is about 15927.4462171435. The cubic root of 253683543 is about 633.0394346129.

It can be divided in two parts, 2536835 and 43, that added together give a triangular number (2536878 = T₂₂₅₂).

The spelling of 253683543 in words is "two hundred fifty-three million, six hundred eighty-three thousand, five hundred forty-three".