255540030 has 64 divisors (see below), whose sum is σ = 629156160. Its totient is φ = 66400256.

The previous prime is 255540011. The next prime is 255540031. The reversal of 255540030 is 30045552.

255540030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255540031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274606 + ... + 275534.

It is an arithmetic number, because the mean of its divisors is an integer number (9830565).

Almost surely, 2^255540030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255540030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314578080).

255540030 is an abundant number, since it is smaller than the sum of its proper divisors (373616130).

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

255540030 is a wasteful number, since it uses less digits than its factorization.

255540030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165.

The product of its (nonzero) digits is 3000, while the sum is 24.

The square root of 255540030 is about 15985.6194750157. The cubic root of 255540030 is about 634.5799027644.

Adding to 255540030 its reverse (30045552), we get a palindrome (285585582).

The spelling of 255540030 in words is "two hundred fifty-five million, five hundred forty thousand, thirty".