4385521457 has 4 divisors (see below), whose sum is σ = 4388904036. Its totient is φ = 4382138880.

The previous prime is 4385521421. The next prime is 4385521477. The reversal of 4385521457 is 7541255834.

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 3477342961 + 908178496 = 58969^2 + 30136^2 .

It is a cyclic number.

It is not a de Polignac number, because 4385521457 - 2²⁰ = 4384472881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4385521477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689344 + ... + 1691937.

It is an arithmetic number, because the mean of its divisors is an integer number (1097226009).

Almost surely, 2^4385521457 is an apocalyptic number.

It is an amenable number.

4385521457 is a deficient number, since it is larger than the sum of its proper divisors (3382579).

4385521457 is a wasteful number, since it uses less digits than its factorization.

4385521457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3382578.

The product of its digits is 672000, while the sum is 44.

The square root of 4385521457 is about 66223.2697546716. The cubic root of 4385521457 is about 1636.8432057974.

The spelling of 4385521457 in words is "four billion, three hundred eighty-five million, five hundred twenty-one thousand, four hundred fifty-seven".