256503350 has 12 divisors (see below), whose sum is σ = 477096324. Its totient is φ = 102601320.

The previous prime is 256503349. The next prime is 256503367. The reversal of 256503350 is 53305652.

It is a happy number.

It is a super-2 number, since 2×256503350² = 131587937122445000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2564984 + ... + 2565083.

It is an arithmetic number, because the mean of its divisors is an integer number (39758027).

Almost surely, 2^256503350 is an apocalyptic number.

256503350 is a deficient number, since it is larger than the sum of its proper divisors (220592974).

256503350 is a wasteful number, since it uses less digits than its factorization.

256503350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130079 (or 5130074 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 29.

The square root of 256503350 is about 16015.7219631211. The cubic root of 256503350 is about 635.3763037098.

The spelling of 256503350 in words is "two hundred fifty-six million, five hundred three thousand, three hundred fifty".