1080557 has 2 divisors, whose sum is σ = 1080558. Its totient is φ = 1080556.

The previous prime is 1080553. The next prime is 1080559. The reversal of 1080557 is 7550801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 609961 + 470596 = 781^2 + 686^2 .

It is an emirp because it is prime and its reverse (7550801) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1080557 - 2² = 1080553 is a prime.

Together with 1080559, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1080553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540278 + 540279.

It is an arithmetic number, because the mean of its divisors is an integer number (540279).

2^1080557 is an apocalyptic number.

It is an amenable number.

1080557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080557 is an equidigital number, since it uses as much as digits as its factorization.

1080557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 1080557 is about 1039.4984367473. The cubic root of 1080557 is about 102.6161918545.

The spelling of 1080557 in words is "one million, eighty thousand, five hundred fifty-seven".