255502397 has 6 divisors (see below), whose sum is σ = 257399898. Its totient is φ = 253618784.

The previous prime is 255502393. The next prime is 255502417. The reversal of 255502397 is 793205552.

It can be written as a sum of positive squares in 3 ways, for example, as 2247001 + 253255396 = 1499^2 + 15914^2 .

It is not a de Polignac number, because 255502397 - 2² = 255502393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 255502397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255502393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11963 + ... + 25575.

It is an arithmetic number, because the mean of its divisors is an integer number (42899983).

Almost surely, 2^255502397 is an apocalyptic number.

It is an amenable number.

255502397 is a deficient number, since it is larger than the sum of its proper divisors (1897501).

255502397 is an equidigital number, since it uses as much as digits as its factorization.

255502397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13887 (or 13750 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 38.

The square root of 255502397 is about 15984.4423424779. The cubic root of 255502397 is about 634.5487500224.

The spelling of 255502397 in words is "two hundred fifty-five million, five hundred two thousand, three hundred ninety-seven".