2040523 has 4 divisors (see below), whose sum is σ = 2044168. Its totient is φ = 2036880.

The previous prime is 2040497. The next prime is 2040539. The reversal of 2040523 is 3250402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3250402 = 2 ⋅1625201.

It is a cyclic number.

It is not a de Polignac number, because 2040523 - 2¹⁷ = 1909451 is a prime.

It is a super-2 number, since 2×2040523² = 8327468227058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2040497 and 2040506.

It is not an unprimeable number, because it can be changed into a prime (2040593) 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, 786 + ... + 2167.

It is an arithmetic number, because the mean of its divisors is an integer number (511042).

2^2040523 is an apocalyptic number.

2040523 is a deficient number, since it is larger than the sum of its proper divisors (3645).

2040523 is an equidigital number, since it uses as much as digits as its factorization.

2040523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3644.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 2040523 is about 1428.4687605965. The cubic root of 2040523 is about 126.8373514605.

Adding to 2040523 its reverse (3250402), we get a palindrome (5290925).

The spelling of 2040523 in words is "two million, forty thousand, five hundred twenty-three".