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253241 = 1571613
BaseRepresentation
bin111101110100111001
3110212101022
4331310321
531100431
65232225
72103212
oct756471
9425338
10253241
1116329a
12102675
138b361
1468409
155007b
hex3dd39

253241 has 4 divisors (see below), whose sum is σ = 255012. Its totient is φ = 251472.

The previous prime is 253229. The next prime is 253243. The reversal of 253241 is 142352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 115600 + 137641 = 340^2 + 371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-253241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650 + ... + 963.

It is an arithmetic number, because the mean of its divisors is an integer number (63753).

It is a Poulet number, since it divides 2253240-1.

2253241 is an apocalyptic number.

It is an amenable number.

253241 is a deficient number, since it is larger than the sum of its proper divisors (1771).

253241 is a wasteful number, since it uses less digits than its factorization.

253241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770.

The product of its digits is 240, while the sum is 17.

The square root of 253241 is about 503.2305634597. The cubic root of 253241 is about 63.2671114529.

Adding to 253241 its reverse (142352), we get a palindrome (395593).

Subtracting from 253241 its reverse (142352), we obtain a square (110889 = 3332).

It can be divided in two parts, 253 and 241, that added together give a palindrome (494).

The spelling of 253241 in words is "two hundred fifty-three thousand, two hundred forty-one".

Divisors: 1 157 1613 253241