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253155 = 3572411
BaseRepresentation
bin111101110011100011
3110212021010
4331303203
531100110
65232003
72103030
oct756343
9425233
10253155
11163221
12102603
138b2c6
1468387
1550020
hex3dce3

253155 has 16 divisors (see below), whose sum is σ = 463104. Its totient is φ = 115680.

The previous prime is 253153. The next prime is 253157. The reversal of 253155 is 551352.

It is an interprime number because it is at equal distance from previous prime (253153) and next prime (253157).

It is not a de Polignac number, because 253155 - 21 = 253153 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253155.

It is not an unprimeable number, because it can be changed into a prime (253153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1101 + ... + 1310.

It is an arithmetic number, because the mean of its divisors is an integer number (28944).

2253155 is an apocalyptic number.

253155 is a deficient number, since it is larger than the sum of its proper divisors (209949).

253155 is a wasteful number, since it uses less digits than its factorization.

253155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2426.

The product of its digits is 750, while the sum is 21.

The square root of 253155 is about 503.1451082938. The cubic root of 253155 is about 63.2599488587.

Subtracting from 253155 its product of digits (750), we obtain a triangular number (252405 = T710).

The spelling of 253155 in words is "two hundred fifty-three thousand, one hundred fifty-five".

Divisors: 1 3 5 7 15 21 35 105 2411 7233 12055 16877 36165 50631 84385 253155