255451770 has 96 divisors (see below), whose sum is σ = 799044480. Its totient is φ = 55313280.

The previous prime is 255451759. The next prime is 255451799. The reversal of 255451770 is 77154552.

255451770 is a `hidden beast` number, since 25 + 54 + 517 + 70 = 666.

It is a super-2 number, since 2×255451770² = 130511213592265800, which contains 22 as substring.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 1300 + ... + 22640.

It is an arithmetic number, because the mean of its divisors is an integer number (8323380).

Almost surely, 2^255451770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255451770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399522240).

255451770 is an abundant number, since it is smaller than the sum of its proper divisors (543592710).

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

255451770 is a wasteful number, since it uses less digits than its factorization.

255451770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21380 (or 21377 counting only the distinct ones).

The product of its (nonzero) digits is 49000, while the sum is 36.

The square root of 255451770 is about 15982.8586304203. The cubic root of 255451770 is about 634.5068359712.

The spelling of 255451770 in words is "two hundred fifty-five million, four hundred fifty-one thousand, seven hundred seventy".