1550045 has 16 divisors (see below), whose sum is σ = 2160768. Its totient is φ = 1045440.

The previous prime is 1550033. The next prime is 1550051. The reversal of 1550045 is 5400551.

It is not a de Polignac number, because 1550045 - 2⁶ = 1549981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1549999 and 1550026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2015 + ... + 2675.

It is an arithmetic number, because the mean of its divisors is an integer number (135048).

2^1550045 is an apocalyptic number.

It is an amenable number.

1550045 is a deficient number, since it is larger than the sum of its proper divisors (610723).

1550045 is an equidigital number, since it uses as much as digits as its factorization.

1550045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740.

The product of its (nonzero) digits is 500, while the sum is 20.

The square root of 1550045 is about 1245.0080321026. The cubic root of 1550045 is about 115.7305726779.

Subtracting from 1550045 its sum of digits (20), we obtain a square (1550025 = 1245²).

Adding to 1550045 its reverse (5400551), we get a palindrome (6950596).

The spelling of 1550045 in words is "one million, five hundred fifty thousand, forty-five".