1086555257 has 2 divisors, whose sum is σ = 1086555258. Its totient is φ = 1086555256.

The previous prime is 1086555203. The next prime is 1086555263. The reversal of 1086555257 is 7525556801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1084977721 + 1577536 = 32939^2 + 1256^2 .

It is a cyclic number.

It is not a de Polignac number, because 1086555257 - 2¹⁰ = 1086554233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1086555277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543277628 + 543277629.

It is an arithmetic number, because the mean of its divisors is an integer number (543277629).

Almost surely, 2^1086555257 is an apocalyptic number.

It is an amenable number.

1086555257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1086555257 is an equidigital number, since it uses as much as digits as its factorization.

1086555257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420000, while the sum is 44.

The square root of 1086555257 is about 32962.9376269774. The cubic root of 1086555257 is about 1028.0571844751.

The spelling of 1086555257 in words is "one billion, eighty-six million, five hundred fifty-five thousand, two hundred fifty-seven".