2487557 has 2 divisors, whose sum is σ = 2487558. Its totient is φ = 2487556.

The previous prime is 2487523. The next prime is 2487571. The reversal of 2487557 is 7557842.

2487557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1515361 + 972196 = 1231^2 + 986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2487557 - 2⁶ = 2487493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2487557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2487517) 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, 1243778 + 1243779.

It is an arithmetic number, because the mean of its divisors is an integer number (1243779).

2^2487557 is an apocalyptic number.

It is an amenable number.

2487557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2487557 is an equidigital number, since it uses as much as digits as its factorization.

2487557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78400, while the sum is 38.

The square root of 2487557 is about 1577.1990996700. The cubic root of 2487557 is about 135.4953362320.

The spelling of 2487557 in words is "two million, four hundred eighty-seven thousand, five hundred fifty-seven".