2051587 has 2 divisors, whose sum is σ = 2051588. Its totient is φ = 2051586.

The previous prime is 2051537. The next prime is 2051593. The reversal of 2051587 is 7851502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2051587 - 2⁷ = 2051459 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2051507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1025793 + 1025794.

It is an arithmetic number, because the mean of its divisors is an integer number (1025794).

2^2051587 is an apocalyptic number.

2051587 is a deficient number, since it is larger than the sum of its proper divisors (1).

2051587 is an equidigital number, since it uses as much as digits as its factorization.

2051587 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2051587 is about 1432.3362035500. The cubic root of 2051587 is about 127.0661816382.

It can be divided in two parts, 20515 and 87, that added together give a palindrome (20602).

The spelling of 2051587 in words is "two million, fifty-one thousand, five hundred eighty-seven".