255505340 has 24 divisors (see below), whose sum is σ = 538816320. Its totient is φ = 101772608.

The previous prime is 255505339. The next prime is 255505351. The reversal of 255505340 is 43505552.

It is a happy number.

It is a congruent number.

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, 21947 + ... + 31506.

It is an arithmetic number, because the mean of its divisors is an integer number (22450680).

Almost surely, 2^255505340 is an apocalyptic number.

255505340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255505340 is an abundant number, since it is smaller than the sum of its proper divisors (283310980).

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

255505340 is a wasteful number, since it uses less digits than its factorization.

255505340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53701 (or 53699 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 29.

The square root of 255505340 is about 15984.5344004760. The cubic root of 255505340 is about 634.5511863593.

The spelling of 255505340 in words is "two hundred fifty-five million, five hundred five thousand, three hundred forty".