254661 has 8 divisors (see below), whose sum is σ = 370464. Its totient is φ = 154320.

The previous prime is 254659. The next prime is 254663. The reversal of 254661 is 166452.

It is an interprime number because it is at equal distance from previous prime (254659) and next prime (254663).

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

It is not a de Polignac number, because 254661 - 2¹ = 254659 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 254661.

It is not an unprimeable number, because it can be changed into a prime (254663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3826 + ... + 3891.

It is an arithmetic number, because the mean of its divisors is an integer number (46308).

2²⁵⁴⁶⁶¹ is an apocalyptic number.

It is an amenable number.

254661 is a deficient number, since it is larger than the sum of its proper divisors (115803).

254661 is a wasteful number, since it uses less digits than its factorization.

254661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7731.

The product of its digits is 1440, while the sum is 24.

The square root of 254661 is about 504.6394752692. The cubic root of 254661 is about 63.3851438155.

Subtracting from 254661 its reverse (166452), we obtain a square (88209 = 297²).

The spelling of 254661 in words is "two hundred fifty-four thousand, six hundred sixty-one".