255397694 has 4 divisors (see below), whose sum is σ = 383096544. Its totient is φ = 127698846.

The previous prime is 255397673. The next prime is 255397699. The reversal of 255397694 is 496793552.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255397699) 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 as a sum of consecutive naturals, namely, 63849422 + ... + 63849425.

It is an arithmetic number, because the mean of its divisors is an integer number (95774136).

Almost surely, 2^255397694 is an apocalyptic number.

255397694 is a deficient number, since it is larger than the sum of its proper divisors (127698850).

255397694 is a wasteful number, since it uses less digits than its factorization.

255397694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127698849.

The product of its digits is 2041200, while the sum is 50.

The square root of 255397694 is about 15981.1668535186. The cubic root of 255397694 is about 634.4620603787.

It can be divided in two parts, 25539 and 7694, that added together give a palindrome (33233).

The spelling of 255397694 in words is "two hundred fifty-five million, three hundred ninety-seven thousand, six hundred ninety-four".