255405528 has 128 divisors (see below), whose sum is σ = 837120000. Its totient is φ = 70606080.

The previous prime is 255405517. The next prime is 255405539. The reversal of 255405528 is 825504552.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (255405517) and next prime (255405539).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 255405492 and 255405501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44148 + ... + 49596.

It is an arithmetic number, because the mean of its divisors is an integer number (6540000).

Almost surely, 2^255405528 is an apocalyptic number.

255405528 is a gapful number since it is divisible by the number (28) 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 255405528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418560000).

255405528 is an abundant number, since it is smaller than the sum of its proper divisors (581714472).

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

255405528 is a wasteful number, since it uses less digits than its factorization.

255405528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502 (or 5492 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 36.

The square root of 255405528 is about 15981.4119526405. The cubic root of 255405528 is about 634.4685474184.

The spelling of 255405528 in words is "two hundred fifty-five million, four hundred five thousand, five hundred twenty-eight".