255991050 has 192 divisors, whose sum is σ = 817090560. Its totient is φ = 57723840.

The previous prime is 255991039. The next prime is 255991067. The reversal of 255991050 is 50199552.

255991050 is a `hidden beast` number, since 2 + 5 + 599 + 10 + 50 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 255990996 and 255991014.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 973219 + ... + 973481.

It is an arithmetic number, because the mean of its divisors is an integer number (4255680).

Almost surely, 2^255991050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255991050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408545280).

255991050 is an abundant number, since it is smaller than the sum of its proper divisors (561099510).

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

255991050 is a wasteful number, since it uses less digits than its factorization.

255991050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 36.

The square root of 255991050 is about 15999.7203100554. The cubic root of 255991050 is about 634.9530210972.

The spelling of 255991050 in words is "two hundred fifty-five million, nine hundred ninety-one thousand, fifty".