255172020 has 24 divisors (see below), whose sum is σ = 714481824. Its totient is φ = 68045856.

The previous prime is 255172013. The next prime is 255172037. The reversal of 255172020 is 20271552.

255172020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×255172020³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2126374 + ... + 2126493.

It is an arithmetic number, because the mean of its divisors is an integer number (29770076).

Almost surely, 2^255172020 is an apocalyptic number.

255172020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255172020 is an abundant number, since it is smaller than the sum of its proper divisors (459309804).

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

255172020 is a wasteful number, since it uses less digits than its factorization.

255172020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252879 (or 4252877 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 255172020 is about 15974.1046697460. The cubic root of 255172020 is about 634.2751312773.

The spelling of 255172020 in words is "two hundred fifty-five million, one hundred seventy-two thousand, twenty".