255455420 has 96 divisors (see below), whose sum is σ = 606928896. Its totient is φ = 89510400.

The previous prime is 255455381. The next prime is 255455423. The reversal of 255455420 is 24554552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255455423) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1145429 + ... + 1145651.

It is an arithmetic number, because the mean of its divisors is an integer number (6322176).

Almost surely, 2^255455420 is an apocalyptic number.

255455420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255455420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303464448).

255455420 is an abundant number, since it is smaller than the sum of its proper divisors (351473476).

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

255455420 is a wasteful number, since it uses less digits than its factorization.

255455420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411 (or 409 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 255455420 is about 15982.9728148427. The cubic root of 255455420 is about 634.5098579884.

The spelling of 255455420 in words is "two hundred fifty-five million, four hundred fifty-five thousand, four hundred twenty".