253047 has 4 divisors (see below), whose sum is σ = 337400. Its totient is φ = 168696.

The previous prime is 253013. The next prime is 253049. The reversal of 253047 is 740352.

It is a happy number.

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

It is not a de Polignac number, because 253047 - 2⁶ = 252983 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42172 + ... + 42177.

It is an arithmetic number, because the mean of its divisors is an integer number (84350).

2²⁵³⁰⁴⁷ is an apocalyptic number.

253047 is a deficient number, since it is larger than the sum of its proper divisors (84353).

253047 is an equidigital number, since it uses as much as digits as its factorization.

253047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84352.

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 253047 is about 503.0377719416. The cubic root of 253047 is about 63.2509516748.

Adding to 253047 its reverse (740352), we get a palindrome (993399).

The spelling of 253047 in words is "two hundred fifty-three thousand, forty-seven".