255391402 has 32 divisors (see below), whose sum is σ = 463325184. Its totient is φ = 103210800.

The previous prime is 255391387. The next prime is 255391403. The reversal of 255391402 is 204193552.

255391402 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (255391403) 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, 17277 + ... + 28447.

It is an arithmetic number, because the mean of its divisors is an integer number (14478912).

Almost surely, 2^255391402 is an apocalyptic number.

255391402 is a deficient number, since it is larger than the sum of its proper divisors (207933782).

255391402 is a wasteful number, since it uses less digits than its factorization.

255391402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11274.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 255391402 is about 15980.9699955916. The cubic root of 255391402 is about 634.4568501149.

The spelling of 255391402 in words is "two hundred fifty-five million, three hundred ninety-one thousand, four hundred two".