2555305 has 4 divisors (see below), whose sum is σ = 3066372.
Its totient is φ = 2044240.
The previous prime is 2555303. The next prime is 2555309. The reversal of 2555305 is 5035552.
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 257049 + 2298256 = 507^2 + 1516^2
It is not a de Polignac number, because 2555305 - 21 = 2555303 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 2555305.
It is not an unprimeable number, because it can be changed into a prime (2555303) 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, 255526 + ... + 255535.
It is an arithmetic number, because the mean of its divisors is an integer number (766593).
22555305 is an apocalyptic number.
It is an amenable number.
2555305 is a deficient number, since it is larger than the sum of its proper divisors (511067).
2555305 is an equidigital number, since it uses as much as digits as its factorization.
2555305 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 511066.
The product of its (nonzero) digits is 3750, while the sum is 25.
The square root of 2555305 is about 1598.5321391827.
The cubic root of 2555305 is about 136.7143960464.
The spelling of 2555305 in words is "two million, five hundred fifty-five thousand, three hundred five".