255621411 has 6 divisors (see below), whose sum is σ = 369230940. Its totient is φ = 170414268.

The previous prime is 255621403. The next prime is 255621449. The reversal of 255621411 is 114126552.

255621411 is a `hidden beast` number, since 25 + 5 + 621 + 4 + 11 = 666.

It is not a de Polignac number, because 255621411 - 2³ = 255621403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255621451) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14201181 + ... + 14201198.

It is an arithmetic number, because the mean of its divisors is an integer number (61538490).

Almost surely, 2^255621411 is an apocalyptic number.

255621411 is a deficient number, since it is larger than the sum of its proper divisors (113609529).

255621411 is a wasteful number, since it uses less digits than its factorization.

255621411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28402385 (or 28402382 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 255621411 is about 15988.1647164395. The cubic root of 255621411 is about 634.6472598120.

Adding to 255621411 its reverse (114126552), we get a palindrome (369747963).

The spelling of 255621411 in words is "two hundred fifty-five million, six hundred twenty-one thousand, four hundred eleven".