254605 has 8 divisors (see below), whose sum is σ = 329112. Its totient is φ = 187968.

The previous prime is 254593. The next prime is 254623. The reversal of 254605 is 506452.

254605 = T₅₄ + T₅₅ + ... + T₁₁₈.

It can be written as a sum of positive squares in 4 ways, for example, as 21316 + 233289 = 146^2 + 483^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254605 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1894 + ... + 2023.

It is an arithmetic number, because the mean of its divisors is an integer number (41139).

2²⁵⁴⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

254605 is a deficient number, since it is larger than the sum of its proper divisors (74507).

254605 is a wasteful number, since it uses less digits than its factorization.

254605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3935.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 254605 is about 504.5839870626. The cubic root of 254605 is about 63.3804973400.

The spelling of 254605 in words is "two hundred fifty-four thousand, six hundred five".