253906 has 8 divisors (see below), whose sum is σ = 385920. Its totient is φ = 125268.

The previous prime is 253901. The next prime is 253907. The reversal of 253906 is 609352.

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

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (253901) 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 in 3 ways as a sum of consecutive naturals, for example, 646 + ... + 961.

It is an arithmetic number, because the mean of its divisors is an integer number (48240).

2²⁵³⁹⁰⁶ is an apocalyptic number.

253906 is a deficient number, since it is larger than the sum of its proper divisors (132014).

253906 is a wasteful number, since it uses less digits than its factorization.

253906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 253906 is about 503.8908611991. The cubic root of 253906 is about 63.3224419560.

The spelling of 253906 in words is "two hundred fifty-three thousand, nine hundred six".