57012609 has 4 divisors (see below), whose sum is σ = 76016816. Its totient is φ = 38008404.

The previous prime is 57012601. The next prime is 57012707. The reversal of 57012609 is 90621075.

57012609 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 not a de Polignac number, because 57012609 - 2³ = 57012601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57012601) 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, 9502099 + ... + 9502104.

It is an arithmetic number, because the mean of its divisors is an integer number (19004204).

Almost surely, 2^57012609 is an apocalyptic number.

It is an amenable number.

57012609 is a deficient number, since it is larger than the sum of its proper divisors (19004207).

57012609 is a wasteful number, since it uses less digits than its factorization.

57012609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19004206.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 57012609 is about 7550.6694405198. The cubic root of 57012609 is about 384.8784886675.

The spelling of 57012609 in words is "fifty-seven million, twelve thousand, six hundred nine".