1065855457 has 4 divisors (see below), whose sum is σ = 1069261060. Its totient is φ = 1062449856.

The previous prime is 1065855421. The next prime is 1065855463. The reversal of 1065855457 is 7545585601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13242321 + 1052613136 = 3639^2 + 32444^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065855457 is a prime.

It is a super-2 number, since 2×1065855457² = 2272095710433357698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065855467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702332 + ... + 1702957.

It is an arithmetic number, because the mean of its divisors is an integer number (267315265).

Almost surely, 2^1065855457 is an apocalyptic number.

It is an amenable number.

1065855457 is a deficient number, since it is larger than the sum of its proper divisors (3405603).

1065855457 is an equidigital number, since it uses as much as digits as its factorization.

1065855457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405602.

The product of its (nonzero) digits is 840000, while the sum is 46.

The square root of 1065855457 is about 32647.4418140227. The cubic root of 1065855457 is about 1021.4868284944.

The spelling of 1065855457 in words is "one billion, sixty-five million, eight hundred fifty-five thousand, four hundred fifty-seven".