1057945565 has 8 divisors (see below), whose sum is σ = 1286926008. Its totient is φ = 834762240.

The previous prime is 1057945523. The next prime is 1057945571. The reversal of 1057945565 is 5655497501.

It can be written as a sum of positive squares in 4 ways, for example, as 42758521 + 1015187044 = 6539^2 + 31862^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1057945565 is a prime.

It is a super-2 number, since 2×1057945565² = 2238497637006338450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1448876 + ... + 1449605.

It is an arithmetic number, because the mean of its divisors is an integer number (160865751).

Almost surely, 2^1057945565 is an apocalyptic number.

It is an amenable number.

1057945565 is a deficient number, since it is larger than the sum of its proper divisors (228980443).

1057945565 is an equidigital number, since it uses as much as digits as its factorization.

1057945565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898559.

The product of its (nonzero) digits is 945000, while the sum is 47.

The square root of 1057945565 is about 32526.0751551736. The cubic root of 1057945565 is about 1018.9536768170.

The spelling of 1057945565 in words is "one billion, fifty-seven million, nine hundred forty-five thousand, five hundred sixty-five".