255523212 has 72 divisors (see below), whose sum is σ = 741651456. Its totient is φ = 72663264.

The previous prime is 255523211. The next prime is 255523223. The reversal of 255523212 is 212325552.

It is a super-2 number, since 2×255523212² = 130584223741593888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255523211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53923 + ... + 58469.

Almost surely, 2^255523212 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 255523212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370825728).

255523212 is an abundant number, since it is smaller than the sum of its proper divisors (486128244).

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

255523212 is a wasteful number, since it uses less digits than its factorization.

255523212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787 (or 4782 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 255523212 is about 15985.0934310688. The cubic root of 255523212 is about 634.5659811374.

Adding to 255523212 its reverse (212325552), we get a palindrome (467848764).

The spelling of 255523212 in words is "two hundred fifty-five million, five hundred twenty-three thousand, two hundred twelve".