57047930 has 16 divisors (see below), whose sum is σ = 106227720. Its totient is φ = 22032192.

The previous prime is 57047929. The next prime is 57047941. The reversal of 57047930 is 3974075.

It can be written as a sum of positive squares in 4 ways, for example, as 29997529 + 27050401 = 5477^2 + 5201^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98069 + ... + 98648.

Almost surely, 2^57047930 is an apocalyptic number.

57047930 is a deficient number, since it is larger than the sum of its proper divisors (49179790).

57047930 is a wasteful number, since it uses less digits than its factorization.

57047930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196753.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 57047930 is about 7553.0080100580. The cubic root of 57047930 is about 384.9579534674.

The spelling of 57047930 in words is "fifty-seven million, forty-seven thousand, nine hundred thirty".