57215609 has 8 divisors (see below), whose sum is σ = 62482752. Its totient is φ = 51959440.

The previous prime is 57215551. The next prime is 57215617. The reversal of 57215609 is 90651275.

57215609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57215609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57215009) 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 7 ways as a sum of consecutive naturals, for example, 11327 + ... + 15579.

It is an arithmetic number, because the mean of its divisors is an integer number (7810344).

Almost surely, 2^57215609 is an apocalyptic number.

It is an amenable number.

57215609 is a deficient number, since it is larger than the sum of its proper divisors (5267143).

57215609 is a wasteful number, since it uses less digits than its factorization.

57215609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5487.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 57215609 is about 7564.1000125593. The cubic root of 57215609 is about 385.3347490566.

The spelling of 57215609 in words is "fifty-seven million, two hundred fifteen thousand, six hundred nine".