2805157 has 2 divisors, whose sum is σ = 2805158. Its totient is φ = 2805156.

The previous prime is 2805137. The next prime is 2805161. The reversal of 2805157 is 7515082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2461761 + 343396 = 1569^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 2805157 - 2¹¹ = 2803109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2805107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402578 + 1402579.

It is an arithmetic number, because the mean of its divisors is an integer number (1402579).

2^2805157 is an apocalyptic number.

It is an amenable number.

2805157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2805157 is an equidigital number, since it uses as much as digits as its factorization.

2805157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 2805157 is about 1674.8602926812. The cubic root of 2805157 is about 141.0324523327.

The spelling of 2805157 in words is "two million, eight hundred five thousand, one hundred fifty-seven".