256555350 has 60 divisors (see below), whose sum is σ = 712855044. Its totient is φ = 68413680.

The previous prime is 256555339. The next prime is 256555357. The reversal of 256555350 is 53555652.

256555350 is a `hidden beast` number, since 2 + 56 + 5 + 553 + 50 = 666.

It is a super-2 number, since 2×256555350² = 131641295227245000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256555357) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 27624 + ... + 35723.

Almost surely, 2^256555350 is an apocalyptic number.

256555350 is an abundant number, since it is smaller than the sum of its proper divisors (456299694).

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

256555350 is a wasteful number, since it uses less digits than its factorization.

256555350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63371 (or 63357 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 36.

The square root of 256555350 is about 16017.3452856583. The cubic root of 256555350 is about 635.4192366584.

The spelling of 256555350 in words is "two hundred fifty-six million, five hundred fifty-five thousand, three hundred fifty".