1772045 has 24 divisors (see below), whose sum is σ = 2441880. Its totient is φ = 1232000.

The previous prime is 1772033. The next prime is 1772047. The reversal of 1772045 is 5402771.

It can be written as a sum of positive squares in 4 ways, for example, as 609961 + 1162084 = 781^2 + 1078^2 .

It is not a de Polignac number, because 1772045 - 2⁶ = 1771981 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1772047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17495 + ... + 17595.

It is an arithmetic number, because the mean of its divisors is an integer number (101745).

2^1772045 is an apocalyptic number.

It is an amenable number.

1772045 is a deficient number, since it is larger than the sum of its proper divisors (669835).

1772045 is a wasteful number, since it uses less digits than its factorization.

1772045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 1772045 is about 1331.1818057651. The cubic root of 1772045 is about 121.0110182804.

It can be divided in two parts, 177 and 2045, that added together give a palindrome (2222).

The spelling of 1772045 in words is "one million, seven hundred seventy-two thousand, forty-five".