255591936 has 100 divisors (see below), whose sum is σ = 762998412. Its totient is φ = 85183488.

The previous prime is 255591887. The next prime is 255591979. The reversal of 255591936 is 639195552.

255591936 is a `hidden beast` number, since 2 + 5 + 559 + 1 + 93 + 6 = 666.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 255591891 and 255591900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38391 + ... + 44553.

Almost surely, 2^255591936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255591936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381499206).

255591936 is an abundant number, since it is smaller than the sum of its proper divisors (507406476).

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

255591936 is an frugal number, since it uses more digits than its factorization.

255591936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6193 (or 6168 counting only the distinct ones).

The product of its digits is 364500, while the sum is 45.

The square root of 255591936 is about 15987.2429142739. The cubic root of 255591936 is about 634.6228657325.

It can be divided in two parts, 25559 and 1936, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 255591936 in words is "two hundred fifty-five million, five hundred ninety-one thousand, nine hundred thirty-six".