255551020 has 12 divisors (see below), whose sum is σ = 536657184. Its totient is φ = 102220400.

The previous prime is 255550979. The next prime is 255551029. The reversal of 255551020 is 20155552.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (255551029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6388756 + ... + 6388795.

It is an arithmetic number, because the mean of its divisors is an integer number (44721432).

Almost surely, 2^255551020 is an apocalyptic number.

255551020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255551020 is an abundant number, since it is smaller than the sum of its proper divisors (281106164).

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

255551020 is a wasteful number, since it uses less digits than its factorization.

255551020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12777560 (or 12777558 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 25.

The square root of 255551020 is about 15985.9632177733. The cubic root of 255551020 is about 634.5889997516.

The spelling of 255551020 in words is "two hundred fifty-five million, five hundred fifty-one thousand, twenty".