255061 has 4 divisors (see below), whose sum is σ = 261324. Its totient is φ = 248800.

The previous prime is 255053. The next prime is 255071. The reversal of 255061 is 160552.

255061 = 10² + 11² + ... + 91².

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11025 + 244036 = 105^2 + 494^2 .

It is a cyclic number.

It is not a de Polignac number, because 255061 - 2³ = 255053 is a prime.

It is a super-2 number, since 2×255061² = 130112227442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3070 + ... + 3151.

It is an arithmetic number, because the mean of its divisors is an integer number (65331).

2²⁵⁵⁰⁶¹ is an apocalyptic number.

It is an amenable number.

255061 is a deficient number, since it is larger than the sum of its proper divisors (6263).

255061 is an equidigital number, since it uses as much as digits as its factorization.

255061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 255061 is about 505.0356423066. The cubic root of 255061 is about 63.4183131326.

The spelling of 255061 in words is "two hundred fifty-five thousand, sixty-one".