2045501 has 4 divisors (see below), whose sum is σ = 2051004. Its totient is φ = 2040000.

The previous prime is 2045441. The next prime is 2045503. The reversal of 2045501 is 1055402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1055402 = 2 ⋅527701.

It can be written as a sum of positive squares in 2 ways, for example, as 940900 + 1104601 = 970^2 + 1051^2 .

It is a cyclic number.

It is not a de Polignac number, because 2045501 - 2⁶ = 2045437 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 2045501.

It is a congruent number.

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, 2150 + ... + 2951.

It is an arithmetic number, because the mean of its divisors is an integer number (512751).

2^2045501 is an apocalyptic number.

It is an amenable number.

2045501 is a deficient number, since it is larger than the sum of its proper divisors (5503).

2045501 is an equidigital number, since it uses as much as digits as its factorization.

2045501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 2045501 is about 1430.2101244223. The cubic root of 2045501 is about 126.9404105921.

Subtracting from 2045501 its reverse (1055402), we obtain a palindrome (990099).

The spelling of 2045501 in words is "two million, forty-five thousand, five hundred one".