255051240 has 64 divisors (see below), whose sum is σ = 768441600. Its totient is φ = 67721472.

The previous prime is 255051233. The next prime is 255051253. The reversal of 255051240 is 42150552.

It is a happy number.

It is a super-2 number, since 2×255051240² = 130102270051075200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 255051240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24234 + ... + 33126.

It is an arithmetic number, because the mean of its divisors is an integer number (12006900).

Almost surely, 2^255051240 is an apocalyptic number.

255051240 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 255051240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384220800).

255051240 is an abundant number, since it is smaller than the sum of its proper divisors (513390360).

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

255051240 is a wasteful number, since it uses less digits than its factorization.

255051240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9146 (or 9142 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 255051240 is about 15970.3237287163. The cubic root of 255051240 is about 634.1750421421.

It can be divided in two parts, 2550512 and 40, that added together give a palindrome (2550552).

The spelling of 255051240 in words is "two hundred fifty-five million, fifty-one thousand, two hundred forty".