255755645 has 4 divisors (see below), whose sum is σ = 306906780. Its totient is φ = 204604512.

The previous prime is 255755609. The next prime is 255755659. The reversal of 255755645 is 546557552.

It is a happy number.

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 204461401 + 51294244 = 14299^2 + 7162^2 .

It is a cyclic number.

It is not a de Polignac number, because 255755645 - 2¹⁰ = 255754621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 255755596 and 255755605.

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, 25575560 + ... + 25575569.

It is an arithmetic number, because the mean of its divisors is an integer number (76726695).

Almost surely, 2^255755645 is an apocalyptic number.

It is an amenable number.

255755645 is a deficient number, since it is larger than the sum of its proper divisors (51151135).

255755645 is an equidigital number, since it uses as much as digits as its factorization.

255755645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51151134.

The product of its digits is 1050000, while the sum is 44.

The square root of 255755645 is about 15992.3620831946. The cubic root of 255755645 is about 634.7583307537.

The spelling of 255755645 in words is "two hundred fifty-five million, seven hundred fifty-five thousand, six hundred forty-five".