255401424 has 100 divisors (see below), whose sum is σ = 756561696. Its totient is φ = 83135808.

The previous prime is 255401371. The next prime is 255401441. The reversal of 255401424 is 424104552.

255401424 is a `hidden beast` number, since 255 + 401 + 4 + 2 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 53437 + ... + 58019.

Almost surely, 2^255401424 is an apocalyptic number.

255401424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 255401424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (378280848).

255401424 is an abundant number, since it is smaller than the sum of its proper divisors (501160272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255401424 is a wasteful number, since it uses less digits than its factorization.

255401424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4646 (or 4631 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 255401424 is about 15981.2835529566. The cubic root of 255401424 is about 634.4651490675.

Adding to 255401424 its reverse (424104552), we get a palindrome (679505976).

The spelling of 255401424 in words is "two hundred fifty-five million, four hundred one thousand, four hundred twenty-four".