2045537 has 4 divisors (see below), whose sum is σ = 2202900. Its totient is φ = 1888176.

The previous prime is 2045509. The next prime is 2045539. The reversal of 2045537 is 7355402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7355402 = 2 ⋅3677701.

It can be written as a sum of positive squares in 2 ways, for example, as 678976 + 1366561 = 824^2 + 1169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2045537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2045539) 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, 78662 + ... + 78687.

It is an arithmetic number, because the mean of its divisors is an integer number (550725).

2^2045537 is an apocalyptic number.

It is an amenable number.

2045537 is a deficient number, since it is larger than the sum of its proper divisors (157363).

2045537 is a wasteful number, since it uses less digits than its factorization.

2045537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157362.

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 2045537 is about 1430.2227099302. Note that the first 3 decimals coincide. The cubic root of 2045537 is about 126.9411552879.

The spelling of 2045537 in words is "two million, forty-five thousand, five hundred thirty-seven".