255511212 has 24 divisors (see below), whose sum is σ = 650392512. Its totient is φ = 77427600.

The previous prime is 255511211. The next prime is 255511219. The reversal of 255511212 is 212115552.

It is not an unprimeable number, because it can be changed into a prime (255511211) 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, 967714 + ... + 967977.

It is an arithmetic number, because the mean of its divisors is an integer number (27099688).

Almost surely, 2^255511212 is an apocalyptic number.

255511212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

255511212 is an abundant number, since it is smaller than the sum of its proper divisors (394881300).

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

255511212 is a wasteful number, since it uses less digits than its factorization.

255511212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935709 (or 1935707 counting only the distinct ones).

The product of its digits is 1000, while the sum is 24.

The square root of 255511212 is about 15984.7180769634. The cubic root of 255511212 is about 634.5560473876.

Adding to 255511212 its reverse (212115552), we get a palindrome (467626764).

The spelling of 255511212 in words is "two hundred fifty-five million, five hundred eleven thousand, two hundred twelve".