255136 has 48 divisors (see below), whose sum is σ = 616896. Its totient is φ = 101376.

The previous prime is 255133. The next prime is 255137. The reversal of 255136 is 631552.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255133) 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, 3775 + ... + 3841.

It is an arithmetic number, because the mean of its divisors is an integer number (12852).

2²⁵⁵¹³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (308448).

255136 is an abundant number, since it is smaller than the sum of its proper divisors (361760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255136 is a wasteful number, since it uses less digits than its factorization.

255136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 93 counting only the distinct ones).

The product of its digits is 900, while the sum is 22.

The square root of 255136 is about 505.1098890341. The cubic root of 255136 is about 63.4245285182.

Adding to 255136 its product of digits (900), we get a square (256036 = 506²).

Adding to 255136 its reverse (631552), we get a palindrome (886688).

The spelling of 255136 in words is "two hundred fifty-five thousand, one hundred thirty-six".