261254 has 8 divisors (see below), whose sum is σ = 447888. Its totient is φ = 111960.

The previous prime is 261251. The next prime is 261271. The reversal of 261254 is 452162.

It is a happy number.

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 an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 261254.

It is not an unprimeable number, because it can be changed into a prime (261251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9317 + ... + 9344.

It is an arithmetic number, because the mean of its divisors is an integer number (55986).

2²⁶¹²⁵⁴ is an apocalyptic number.

261254 is a deficient number, since it is larger than the sum of its proper divisors (186634).

261254 is a wasteful number, since it uses less digits than its factorization.

261254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18670.

The product of its digits is 480, while the sum is 20.

The square root of 261254 is about 511.1301204194. The cubic root of 261254 is about 63.9274894929.

It can be divided in two parts, 261 and 254, that added together give a palindrome (515).

The spelling of 261254 in words is "two hundred sixty-one thousand, two hundred fifty-four".