5645605457 has 4 divisors (see below), whose sum is σ = 5646890340. Its totient is φ = 5644320576.

The previous prime is 5645605439. The next prime is 5645605487. The reversal of 5645605457 is 7545065465.

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 1960629841 + 3684975616 = 44279^2 + 60704^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645605457 - 2³⁰ = 4571863633 is a prime.

It is a super-2 number, since 2×5645605457² = 63745721952216357698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5645605417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635828 + ... + 644645.

It is an arithmetic number, because the mean of its divisors is an integer number (1411722585).

Almost surely, 2^5645605457 is an apocalyptic number.

It is an amenable number.

5645605457 is a deficient number, since it is larger than the sum of its proper divisors (1284883).

5645605457 is a wasteful number, since it uses less digits than its factorization.

5645605457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284882.

The product of its (nonzero) digits is 2520000, while the sum is 47.

The square root of 5645605457 is about 75137.2441403063. The cubic root of 5645605457 is about 1780.6156033624.

The spelling of 5645605457 in words is "five billion, six hundred forty-five million, six hundred five thousand, four hundred fifty-seven".