255421026 has 120 divisors (see below), whose sum is σ = 695217600. Its totient is φ = 69754608.

The previous prime is 255420967. The next prime is 255421031. The reversal of 255421026 is 620124552.

255421026 is a `hidden beast` number, since 2 + 554 + 2 + 102 + 6 = 666.

255421026 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 181875 + ... + 183273.

It is an arithmetic number, because the mean of its divisors is an integer number (5793480).

Almost surely, 2^255421026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255421026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347608800).

255421026 is an abundant number, since it is smaller than the sum of its proper divisors (439796574).

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

255421026 is a wasteful number, since it uses less digits than its factorization.

255421026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450 (or 1434 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 255421026 is about 15981.8968210910. The cubic root of 255421026 is about 634.4813803365.

Adding to 255421026 its reverse (620124552), we get a palindrome (875545578).

The spelling of 255421026 in words is "two hundred fifty-five million, four hundred twenty-one thousand, twenty-six".