2087557 has 2 divisors, whose sum is σ = 2087558. Its totient is φ = 2087556.

The previous prime is 2087551. The next prime is 2087563. The reversal of 2087557 is 7557802.

It is a balanced prime because it is at equal distance from previous prime (2087551) and next prime (2087563).

It can be written as a sum of positive squares in only one way, i.e., 1252161 + 835396 = 1119^2 + 914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2087557 is a prime.

It is an Ulam number.

2087557 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2087551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1043778 + 1043779.

It is an arithmetic number, because the mean of its divisors is an integer number (1043779).

2^2087557 is an apocalyptic number.

It is an amenable number.

2087557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2087557 is an equidigital number, since it uses as much as digits as its factorization.

2087557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 2087557 is about 1444.8380532087. The cubic root of 2087557 is about 127.8044907534.

The spelling of 2087557 in words is "two million, eighty-seven thousand, five hundred fifty-seven".