275455820 has 24 divisors (see below), whose sum is σ = 603608544. Its totient is φ = 105391616.

The previous prime is 275455813. The next prime is 275455849. The reversal of 275455820 is 28554572.

275455820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298949 + ... + 299868.

It is an arithmetic number, because the mean of its divisors is an integer number (25150356).

Almost surely, 2^275455820 is an apocalyptic number.

275455820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

275455820 is an abundant number, since it is smaller than the sum of its proper divisors (328152724).

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

275455820 is a wasteful number, since it uses less digits than its factorization.

275455820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598849 (or 598847 counting only the distinct ones).

The product of its (nonzero) digits is 112000, while the sum is 38.

The square root of 275455820 is about 16596.8617515481. The cubic root of 275455820 is about 650.6548193939.

The spelling of 275455820 in words is "two hundred seventy-five million, four hundred fifty-five thousand, eight hundred twenty".