2804531 has 2 divisors, whose sum is σ = 2804532. Its totient is φ = 2804530.

The previous prime is 2804521. The next prime is 2804567. The reversal of 2804531 is 1354082.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2804531 is a prime.

It is a super-2 number, since 2×2804531² = 15730788259922, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2804497 and 2804506.

It is not a weakly prime, because it can be changed into another prime (2804521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402265 + 1402266.

It is an arithmetic number, because the mean of its divisors is an integer number (1402266).

2^2804531 is an apocalyptic number.

2804531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2804531 is an equidigital number, since it uses as much as digits as its factorization.

2804531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2804531 is about 1674.6734009950. The cubic root of 2804531 is about 141.0219605987.

The spelling of 2804531 in words is "two million, eight hundred four thousand, five hundred thirty-one".