2056321087 has 2 divisors, whose sum is σ = 2056321088. Its totient is φ = 2056321086.

The previous prime is 2056321051. The next prime is 2056321097. The reversal of 2056321087 is 7801236502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056321087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2056321027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1028160543 + 1028160544.

It is an arithmetic number, because the mean of its divisors is an integer number (1028160544).

Almost surely, 2^2056321087 is an apocalyptic number.

2056321087 is a deficient number, since it is larger than the sum of its proper divisors (1).

2056321087 is an equidigital number, since it uses as much as digits as its factorization.

2056321087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2056321087 is about 45346.6766919032. The cubic root of 2056321087 is about 1271.6384266184.

Adding to 2056321087 its reverse (7801236502), we get a palindrome (9857557589).

The spelling of 2056321087 in words is "two billion, fifty-six million, three hundred twenty-one thousand, eighty-seven".