253606 has 8 divisors (see below), whose sum is σ = 402840. Its totient is φ = 119328.

The previous prime is 253601. The next prime is 253607. The reversal of 253606 is 606352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253601) 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, 3696 + ... + 3763.

It is an arithmetic number, because the mean of its divisors is an integer number (50355).

2²⁵³⁶⁰⁶ is an apocalyptic number.

253606 is the 319-th centered pentagonal number.

253606 is a deficient number, since it is larger than the sum of its proper divisors (149234).

253606 is a wasteful number, since it uses less digits than its factorization.

253606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7478.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 253606 is about 503.5930897064. The cubic root of 253606 is about 63.2974928025.

Adding to 253606 its reverse (606352), we get a palindrome (859958).

The spelling of 253606 in words is "two hundred fifty-three thousand, six hundred six".