253943 has 8 divisors (see below), whose sum is σ = 270816. Its totient is φ = 237600.

The previous prime is 253937. The next prime is 253949. The reversal of 253943 is 349352.

It is an interprime number because it is at equal distance from previous prime (253937) and next prime (253949).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253943 - 2⁶ = 253879 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 (253949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (33852).

2²⁵³⁹⁴³ is an apocalyptic number.

253943 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

253943 is a deficient number, since it is larger than the sum of its proper divisors (16873).

253943 is a wasteful number, since it uses less digits than its factorization.

253943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its digits is 3240, while the sum is 26.

The square root of 253943 is about 503.9275741612. The cubic root of 253943 is about 63.3255176567.

The spelling of 253943 in words is "two hundred fifty-three thousand, nine hundred forty-three".