255821622 has 32 divisors (see below), whose sum is σ = 588252672. Its totient is φ = 72652224.

The previous prime is 255821597. The next prime is 255821623. The reversal of 255821622 is 226128552.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255821623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11223 + ... + 25250.

It is an arithmetic number, because the mean of its divisors is an integer number (18382896).

Almost surely, 2^255821622 is an apocalyptic number.

255821622 is an abundant number, since it is smaller than the sum of its proper divisors (332431050).

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

255821622 is a wasteful number, since it uses less digits than its factorization.

255821622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36652.

The product of its digits is 19200, while the sum is 33.

The square root of 255821622 is about 15994.4247161316. The cubic root of 255821622 is about 634.8129086949.

The spelling of 255821622 in words is "two hundred fifty-five million, eight hundred twenty-one thousand, six hundred twenty-two".