255550633 has 4 divisors (see below), whose sum is σ = 275208388. Its totient is φ = 235892880.

The previous prime is 255550619. The next prime is 255550637. The reversal of 255550633 is 336055552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142277184 + 113273449 = 11928^2 + 10643^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-255550633 is a prime.

It is a super-2 number, since 2×255550633² = 130612252053401378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (255550637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9828858 + ... + 9828883.

It is an arithmetic number, because the mean of its divisors is an integer number (68802097).

Almost surely, 2^255550633 is an apocalyptic number.

It is an amenable number.

255550633 is a deficient number, since it is larger than the sum of its proper divisors (19657755).

255550633 is a wasteful number, since it uses less digits than its factorization.

255550633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19657754.

The product of its (nonzero) digits is 67500, while the sum is 34.

The square root of 255550633 is about 15985.9511133995. The cubic root of 255550633 is about 634.5886794163.

The spelling of 255550633 in words is "two hundred fifty-five million, five hundred fifty thousand, six hundred thirty-three".