1087517 has 2 divisors, whose sum is σ = 1087518. Its totient is φ = 1087516.

The previous prime is 1087487. The next prime is 1087519. The reversal of 1087517 is 7157801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 749956 + 337561 = 866^2 + 581^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087517 - 2⁶ = 1087453 is a prime.

Together with 1087519, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1087517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543758 + 543759.

It is an arithmetic number, because the mean of its divisors is an integer number (543759).

2^1087517 is an apocalyptic number.

It is an amenable number.

1087517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087517 is an equidigital number, since it uses as much as digits as its factorization.

1087517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 1087517 is about 1042.8408315750. The cubic root of 1087517 is about 102.8360416554.

The spelling of 1087517 in words is "one million, eighty-seven thousand, five hundred seventeen".