Search a number
BaseRepresentation
bin111101110001110101
3110212010001
4331301311
531044140
65231301
72102512
oct756165
9425101
10253045
11163131
12102531
138b240
1468309
154ee9a
hex3dc75

253045 has 16 divisors (see below), whose sum is σ = 347760. Its totient is φ = 175104.

The previous prime is 253013. The next prime is 253049. The reversal of 253045 is 540352.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5041 + 248004 = 71^2 + 498^2 .

It is a cyclic number.

It is not a de Polignac number, because 253045 - 25 = 253013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253049) 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, 991 + ... + 1219.

It is an arithmetic number, because the mean of its divisors is an integer number (21735).

2253045 is an apocalyptic number.

It is an amenable number.

253045 is a deficient number, since it is larger than the sum of its proper divisors (94715).

253045 is a wasteful number, since it uses less digits than its factorization.

253045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 253045 is about 503.0357840154. The cubic root of 253045 is about 63.2507850361.

Adding to 253045 its reverse (540352), we get a palindrome (793397).

The spelling of 253045 in words is "two hundred fifty-three thousand, forty-five".