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253623 = 3174973
BaseRepresentation
bin111101111010110111
3110212220110
4331322313
531103443
65234103
72104266
oct757267
9425813
10253623
11163607
12102933
138b596
14685dd
1550233
hex3deb7

253623 has 8 divisors (see below), whose sum is σ = 358128. Its totient is φ = 159104.

The previous prime is 253613. The next prime is 253633. The reversal of 253623 is 326352.

It is an interprime number because it is at equal distance from previous prime (253613) and next prime (253633).

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 253623 - 24 = 253607 is a prime.

It is a super-2 number, since 2×2536232 = 128649252258, which contains 22 as substring.

It is a d-powerful number, because it can be written as 25 + 55 + 64 + 310 + 217 + 310 .

It is a self number, because there is not a number n which added to its sum of digits gives 253623.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253623.

It is not an unprimeable number, because it can be changed into a prime (253613) 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, 2436 + ... + 2537.

It is an arithmetic number, because the mean of its divisors is an integer number (44766).

2253623 is an apocalyptic number.

253623 is a deficient number, since it is larger than the sum of its proper divisors (104505).

253623 is a wasteful number, since it uses less digits than its factorization.

253623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993.

The product of its digits is 1080, while the sum is 21.

The square root of 253623 is about 503.6099681301. The cubic root of 253623 is about 63.2989071136.

Adding to 253623 its reverse (326352), we get a palindrome (579975).

The spelling of 253623 in words is "two hundred fifty-three thousand, six hundred twenty-three".

Divisors: 1 3 17 51 4973 14919 84541 253623