57449305 has 8 divisors (see below), whose sum is σ = 69622344. Its totient is φ = 45504000.

The previous prime is 57449291. The next prime is 57449347. The reversal of 57449305 is 50394475.

It can be written as a sum of positive squares in 4 ways, for example, as 16540489 + 40908816 = 4067^2 + 6396^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-57449305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56376 + ... + 57385.

It is an arithmetic number, because the mean of its divisors is an integer number (8702793).

Almost surely, 2^57449305 is an apocalyptic number.

It is an amenable number.

57449305 is a deficient number, since it is larger than the sum of its proper divisors (12173039).

57449305 is a wasteful number, since it uses less digits than its factorization.

57449305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113867.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 57449305 is about 7579.5319776356. The cubic root of 57449305 is about 385.8586670599.

The spelling of 57449305 in words is "fifty-seven million, four hundred forty-nine thousand, three hundred five".