255311433 has 40 divisors (see below), whose sum is σ = 421894088. Its totient is φ = 152845056.

The previous prime is 255311429. The next prime is 255311449. The reversal of 255311433 is 334113552.

It can be written as a sum of positive squares in 4 ways, for example, as 28869129 + 226442304 = 5373^2 + 15048^2 .

It is not a de Polignac number, because 255311433 - 2² = 255311429 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 255311397 and 255311406.

It is not an unprimeable number, because it can be changed into a prime (255311453) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 35685 + ... + 42237.

Almost surely, 2^255311433 is an apocalyptic number.

It is an amenable number.

255311433 is a deficient number, since it is larger than the sum of its proper divisors (166582655).

255311433 is a wasteful number, since it uses less digits than its factorization.

255311433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615 (or 6606 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 255311433 is about 15978.4677926264. The cubic root of 255311433 is about 634.3906221265.

Adding to 255311433 its reverse (334113552), we get a palindrome (589424985).

The spelling of 255311433 in words is "two hundred fifty-five million, three hundred eleven thousand, four hundred thirty-three".