57432109 has 4 divisors (see below), whose sum is σ = 65636704. Its totient is φ = 49227516.

The previous prime is 57432097. The next prime is 57432139. The reversal of 57432109 is 90123475.

57432109 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 57432109 - 2⁵ = 57432077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57432139) 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, 4102287 + ... + 4102300.

It is an arithmetic number, because the mean of its divisors is an integer number (16409176).

Almost surely, 2^57432109 is an apocalyptic number.

It is an amenable number.

57432109 is a deficient number, since it is larger than the sum of its proper divisors (8204595).

57432109 is an equidigital number, since it uses as much as digits as its factorization.

57432109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8204594.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 57432109 is about 7578.3975219040. The cubic root of 57432109 is about 385.8201641991.

The spelling of 57432109 in words is "fifty-seven million, four hundred thirty-two thousand, one hundred nine".