255391401 has 8 divisors (see below), whose sum is σ = 340611264. Its totient is φ = 170216240.

The previous prime is 255391387. The next prime is 255391403. The reversal of 255391401 is 104193552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255391401 - 2¹¹ = 255389353 is a prime.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 5875 + ... + 23351.

It is an arithmetic number, because the mean of its divisors is an integer number (42576408).

Almost surely, 2^255391401 is an apocalyptic number.

It is an amenable number.

255391401 is a deficient number, since it is larger than the sum of its proper divisors (85219863).

255391401 is a wasteful number, since it uses less digits than its factorization.

255391401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22351.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 255391401 is about 15980.9699643044. The cubic root of 255391401 is about 634.4568492868.

The spelling of 255391401 in words is "two hundred fifty-five million, three hundred ninety-one thousand, four hundred one".