253306 has 4 divisors (see below), whose sum is σ = 379962. Its totient is φ = 126652.

The previous prime is 253273. The next prime is 253307. The reversal of 253306 is 603352.

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

It can be written as a sum of positive squares in only one way, i.e., 245025 + 8281 = 495^2 + 91^2 .

It is not an unprimeable number, because it can be changed into a prime (253307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63325 + ... + 63328.

2²⁵³³⁰⁶ is an apocalyptic number.

253306 is a deficient number, since it is larger than the sum of its proper divisors (126656).

253306 is a wasteful number, since it uses less digits than its factorization.

253306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126655.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 253306 is about 503.2951420389. The cubic root of 253306 is about 63.2725239657.

Adding to 253306 its reverse (603352), we get a palindrome (856658).

The spelling of 253306 in words is "two hundred fifty-three thousand, three hundred six".