2455205 has 4 divisors (see below), whose sum is σ = 2946252. Its totient is φ = 1964160.

The previous prime is 2455183. The next prime is 2455207. The reversal of 2455205 is 5025542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5025542 = 2 ⋅2512771.

It can be written as a sum of positive squares in 2 ways, for example, as 247009 + 2208196 = 497^2 + 1486^2 .

It is not a de Polignac number, because 2455205 - 2¹⁶ = 2389669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2455207) 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, 245516 + ... + 245525.

It is an arithmetic number, because the mean of its divisors is an integer number (736563).

2^2455205 is an apocalyptic number.

It is an amenable number.

2455205 is a deficient number, since it is larger than the sum of its proper divisors (491047).

2455205 is an equidigital number, since it uses as much as digits as its factorization.

2455205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491046.

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 2455205 is about 1566.9093783624. The cubic root of 2455205 is about 134.9053749340.

The spelling of 2455205 in words is "two million, four hundred fifty-five thousand, two hundred five".