2045504 has 28 divisors (see below), whose sum is σ = 4194048. Its totient is φ = 988800.

The previous prime is 2045503. The next prime is 2045509. The reversal of 2045504 is 4055402.

It is a happy number.

It is a super-2 number, since 2×2045504² = 8368173228032, which contains 22 as substring.

It is a plaindrome in base 11.

It is a nialpdrome in base 8.

It is not an unprimeable number, because it can be changed into a prime (2045503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1469 + ... + 2499.

2^2045504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2045504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2097024).

2045504 is an abundant number, since it is smaller than the sum of its proper divisors (2148544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2045504 is a wasteful number, since it uses less digits than its factorization.

2045504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1074 (or 1064 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2045504 is about 1430.2111732188. The cubic root of 2045504 is about 126.9404726504.

The spelling of 2045504 in words is "two million, forty-five thousand, five hundred four".