1600045 has 4 divisors (see below), whose sum is σ = 1920060. Its totient is φ = 1280032.

The previous prime is 1600037. The next prime is 1600051. The reversal of 1600045 is 5400061.

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 1214404 + 385641 = 1102^2 + 621^2 .

It is a cyclic number.

It is not a de Polignac number, because 1600045 - 2³ = 1600037 is a prime.

1600045 is a lucky 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, 160000 + ... + 160009.

It is an arithmetic number, because the mean of its divisors is an integer number (480015).

2^1600045 is an apocalyptic number.

It is an amenable number.

1600045 is a deficient number, since it is larger than the sum of its proper divisors (320015).

1600045 is an equidigital number, since it uses as much as digits as its factorization.

1600045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320014.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1600045 is about 1264.9288517541. The cubic root of 1600045 is about 116.9618060249.

Adding to 1600045 its sum of digits (16), we get a palindrome (1600061).

The spelling of 1600045 in words is "one million, six hundred thousand, forty-five".