255415 has 8 divisors (see below), whose sum is σ = 319968. Its totient is φ = 195360.

The previous prime is 255413. The next prime is 255419. The reversal of 255415 is 514552.

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

It is not a de Polignac number, because 255415 - 2¹ = 255413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255413) 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 7 ways as a sum of consecutive naturals, for example, 996 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (39996).

2²⁵⁵⁴¹⁵ is an apocalyptic number.

255415 is a deficient number, since it is larger than the sum of its proper divisors (64553).

255415 is a wasteful number, since it uses less digits than its factorization.

255415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249.

The product of its digits is 1000, while the sum is 22.

The square root of 255415 is about 505.3859910999. The cubic root of 255415 is about 63.4476390647.

Adding to 255415 its reverse (514552), we get a palindrome (769967).

The spelling of 255415 in words is "two hundred fifty-five thousand, four hundred fifteen".