1772305 has 4 divisors (see below), whose sum is σ = 2126772. Its totient is φ = 1417840.

The previous prime is 1772297. The next prime is 1772317. The reversal of 1772305 is 5032771.

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 1065024 + 707281 = 1032^2 + 841^2 .

It is not a de Polignac number, because 1772305 - 2³ = 1772297 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 1772305.

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, 177226 + ... + 177235.

It is an arithmetic number, because the mean of its divisors is an integer number (531693).

2^1772305 is an apocalyptic number.

It is an amenable number.

1772305 is a deficient number, since it is larger than the sum of its proper divisors (354467).

1772305 is an equidigital number, since it uses as much as digits as its factorization.

1772305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354466.

The product of its (nonzero) digits is 1470, while the sum is 25.

The square root of 1772305 is about 1331.2794597679. The cubic root of 1772305 is about 121.0169363630.

The spelling of 1772305 in words is "one million, seven hundred seventy-two thousand, three hundred five".