255243246 has 8 divisors (see below), whose sum is σ = 510486504. Its totient is φ = 85081080.

The previous prime is 255243199. The next prime is 255243269. The reversal of 255243246 is 642342552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

255243246 is an admirable number.

It is a super-2 number, since 2×255243246² = 130298229257233032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21270265 + ... + 21270276.

It is an arithmetic number, because the mean of its divisors is an integer number (63810813).

Almost surely, 2^255243246 is an apocalyptic number.

255243246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

255243246 is a wasteful number, since it uses less digits than its factorization.

255243246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42540546.

The product of its digits is 57600, while the sum is 33.

The square root of 255243246 is about 15976.3339349176. Note that the first 3 decimals coincide. The cubic root of 255243246 is about 634.3341407222.

Adding to 255243246 its reverse (642342552), we get a palindrome (897585798).

The spelling of 255243246 in words is "two hundred fifty-five million, two hundred forty-three thousand, two hundred forty-six".