2475805 has 4 divisors (see below), whose sum is σ = 2970972. Its totient is φ = 1980640.

The previous prime is 2475799. The next prime is 2475821. The reversal of 2475805 is 5085742.

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 1390041 + 1085764 = 1179^2 + 1042^2 .

It is not a de Polignac number, because 2475805 - 2³ = 2475797 is a prime.

It is a super-2 number, since 2×2475805² = 12259220796050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is a Duffinian number.

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, 247576 + ... + 247585.

It is an arithmetic number, because the mean of its divisors is an integer number (742743).

2^2475805 is an apocalyptic number.

It is an amenable number.

2475805 is a deficient number, since it is larger than the sum of its proper divisors (495167).

2475805 is an equidigital number, since it uses as much as digits as its factorization.

2475805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495166.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 2475805 is about 1573.4690972498. The cubic root of 2475805 is about 135.2816251670.

The spelling of 2475805 in words is "two million, four hundred seventy-five thousand, eight hundred five".