255210697 has 4 divisors (see below), whose sum is σ = 291669376. Its totient is φ = 218752020.

The previous prime is 255210673. The next prime is 255210713. The reversal of 255210697 is 796012552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 255210697 - 2¹⁵ = 255177929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255210617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18229329 + ... + 18229342.

It is an arithmetic number, because the mean of its divisors is an integer number (72917344).

Almost surely, 2^255210697 is an apocalyptic number.

It is an amenable number.

255210697 is a deficient number, since it is larger than the sum of its proper divisors (36458679).

255210697 is an equidigital number, since it uses as much as digits as its factorization.

255210697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36458678.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 255210697 is about 15975.3152394562. The cubic root of 255210697 is about 634.3071758302.

The spelling of 255210697 in words is "two hundred fifty-five million, two hundred ten thousand, six hundred ninety-seven".