253166 has 4 divisors (see below), whose sum is σ = 379752. Its totient is φ = 126582.

The previous prime is 253159. The next prime is 253229. The reversal of 253166 is 661352.

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

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 63290 + ... + 63293.

It is an arithmetic number, because the mean of its divisors is an integer number (94938).

2²⁵³¹⁶⁶ is an apocalyptic number.

253166 is a deficient number, since it is larger than the sum of its proper divisors (126586).

253166 is a wasteful number, since it uses less digits than its factorization.

253166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126585.

The product of its digits is 1080, while the sum is 23.

The square root of 253166 is about 503.1560394152. The cubic root of 253166 is about 63.2608650949.

The spelling of 253166 in words is "two hundred fifty-three thousand, one hundred sixty-six".