255605045 has 4 divisors (see below), whose sum is σ = 306726060. Its totient is φ = 204484032.

The previous prime is 255605017. The next prime is 255605059. The reversal of 255605045 is 540506552.

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 152744881 + 102860164 = 12359^2 + 10142^2 .

It is a cyclic number.

It is not a de Polignac number, because 255605045 - 2¹² = 255600949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25560500 + ... + 25560509.

It is an arithmetic number, because the mean of its divisors is an integer number (76681515).

Almost surely, 2^255605045 is an apocalyptic number.

It is an amenable number.

255605045 is a deficient number, since it is larger than the sum of its proper divisors (51121015).

255605045 is an equidigital number, since it uses as much as digits as its factorization.

255605045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51121014.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 255605045 is about 15987.6528921540. The cubic root of 255605045 is about 634.6337152257.

The spelling of 255605045 in words is "two hundred fifty-five million, six hundred five thousand, forty-five".