253863 has 12 divisors (see below), whose sum is σ = 373048. Its totient is φ = 166320.
The previous prime is 253853. The next prime is 253867. The reversal of 253863 is 368352.
It is not a de Polignac number, because 253863 - 28 = 253607 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 (253867) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 393 + ... + 813.
2253863 is an apocalyptic number.
253863 is a deficient number, since it is larger than the sum of its proper divisors (119185).
253863 is a wasteful number, since it uses less digits than its factorization.
253863 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 494 (or 491 counting only the distinct ones).
The product of its digits is 4320, while the sum is 27.
The square root of 253863 is about 503.8481914228. The cubic root of 253863 is about 63.3188671176.
It can be divided in two parts, 2538 and 63, that added together give a square (2601 = 512).
The spelling of 253863 in words is "two hundred fifty-three thousand, eight hundred sixty-three".
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