57750809 has 4 divisors (see below), whose sum is σ = 57881616. Its totient is φ = 57620004.

The previous prime is 57750779. The next prime is 57750859. The reversal of 57750809 is 90805775.

It is a happy number.

57750809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57750809 - 2²⁴ = 40973593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57750859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64739 + ... + 65624.

It is an arithmetic number, because the mean of its divisors is an integer number (14470404).

Almost surely, 2^57750809 is an apocalyptic number.

It is an amenable number.

57750809 is a deficient number, since it is larger than the sum of its proper divisors (130807).

57750809 is a wasteful number, since it uses less digits than its factorization.

57750809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130806.

The product of its (nonzero) digits is 88200, while the sum is 41.

The square root of 57750809 is about 7599.3953048910. The cubic root of 57750809 is about 386.5325075428.

The spelling of 57750809 in words is "fifty-seven million, seven hundred fifty thousand, eight hundred nine".