255321022 has 64 divisors (see below), whose sum is σ = 462163968. Its totient is φ = 104544000.

The previous prime is 255321013. The next prime is 255321023. The reversal of 255321022 is 220123552.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 255320984 and 255321002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255321023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 642928 + ... + 643324.

It is an arithmetic number, because the mean of its divisors is an integer number (7221312).

Almost surely, 2^255321022 is an apocalyptic number.

255321022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

255321022 is a deficient number, since it is larger than the sum of its proper divisors (206842946).

255321022 is a wasteful number, since it uses less digits than its factorization.

255321022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 255321022 is about 15978.7678498688. The cubic root of 255321022 is about 634.3985641857.

Adding to 255321022 its reverse (220123552), we get a palindrome (475444574).

The spelling of 255321022 in words is "two hundred fifty-five million, three hundred twenty-one thousand, twenty-two".