2804332561 has 2 divisors, whose sum is σ = 2804332562. Its totient is φ = 2804332560.

The previous prime is 2804332499. The next prime is 2804332579. The reversal of 2804332561 is 1652334082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2576171536 + 228161025 = 50756^2 + 15105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2804332561 - 2¹⁵ = 2804299793 is a prime.

It is a super-2 number, since 2×2804332561² = 15728562225369637442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2804332961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402166280 + 1402166281.

It is an arithmetic number, because the mean of its divisors is an integer number (1402166281).

Almost surely, 2^2804332561 is an apocalyptic number.

It is an amenable number.

2804332561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2804332561 is an equidigital number, since it uses as much as digits as its factorization.

2804332561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2804332561 is about 52955.9492502967. The cubic root of 2804332561 is about 1410.1863444344.

The spelling of 2804332561 in words is "two billion, eight hundred four million, three hundred thirty-two thousand, five hundred sixty-one".