57409309 has 8 divisors (see below), whose sum is σ = 58433760. Its totient is φ = 56394000.

The previous prime is 57409277. The next prime is 57409337. The reversal of 57409309 is 90390475.

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

It is a cyclic number.

It is not a de Polignac number, because 57409309 - 2⁵ = 57409277 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 (57409369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11062 + ... + 15400.

It is an arithmetic number, because the mean of its divisors is an integer number (7304220).

Almost surely, 2^57409309 is an apocalyptic number.

It is an amenable number.

57409309 is a deficient number, since it is larger than the sum of its proper divisors (1024451).

57409309 is a wasteful number, since it uses less digits than its factorization.

57409309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4571.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 57409309 is about 7576.8930967779. The cubic root of 57409309 is about 385.7691017985.

The spelling of 57409309 in words is "fifty-seven million, four hundred nine thousand, three hundred nine".