255207247 has 16 divisors (see below), whose sum is σ = 278201952. Its totient is φ = 233159680.

The previous prime is 255207217. The next prime is 255207263. The reversal of 255207247 is 742702552.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 255207247 - 2²³ = 246818639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255207217) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 157413 + ... + 159025.

It is an arithmetic number, because the mean of its divisors is an integer number (17387622).

Almost surely, 2^255207247 is an apocalyptic number.

255207247 is a deficient number, since it is larger than the sum of its proper divisors (22994705).

255207247 is a wasteful number, since it uses less digits than its factorization.

255207247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 255207247 is about 15975.2072600014. The cubic root of 255207247 is about 634.3043175780.

Adding to 255207247 its reverse (742702552), we get a palindrome (997909799).

The spelling of 255207247 in words is "two hundred fifty-five million, two hundred seven thousand, two hundred forty-seven".