255122136 has 80 divisors (see below), whose sum is σ = 726798600. Its totient is φ = 83586816.

The previous prime is 255122117. The next prime is 255122137. The reversal of 255122136 is 631221552.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255122137) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34896 + ... + 41568.

Almost surely, 2^255122136 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 255122136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363399300).

255122136 is an abundant number, since it is smaller than the sum of its proper divisors (471676464).

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

255122136 is a wasteful number, since it uses less digits than its factorization.

255122136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6750 (or 6737 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 255122136 is about 15972.5431913644. The cubic root of 255122136 is about 634.2337967523.

Adding to 255122136 its reverse (631221552), we get a palindrome (886343688).

The spelling of 255122136 in words is "two hundred fifty-five million, one hundred twenty-two thousand, one hundred thirty-six".