57347789 has 4 divisors (see below), whose sum is σ = 57766524. Its totient is φ = 56929056.

The previous prime is 57347777. The next prime is 57347791. The reversal of 57347789 is 98774375.

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 41705764 + 15642025 = 6458^2 + 3955^2 .

It is a cyclic number.

It is not a de Polignac number, because 57347789 - 2²⁰ = 56299213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57347729) 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, 209162 + ... + 209435.

It is an arithmetic number, because the mean of its divisors is an integer number (14441631).

Almost surely, 2^57347789 is an apocalyptic number.

It is an amenable number.

57347789 is a deficient number, since it is larger than the sum of its proper divisors (418735).

57347789 is a wasteful number, since it uses less digits than its factorization.

57347789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418734.

The product of its digits is 1481760, while the sum is 50.

The square root of 57347789 is about 7572.8322970999. The cubic root of 57347789 is about 385.6312554116.

The spelling of 57347789 in words is "fifty-seven million, three hundred forty-seven thousand, seven hundred eighty-nine".