57009727 has 4 divisors (see below), whose sum is σ = 57265600. Its totient is φ = 56753856.

The previous prime is 57009703. The next prime is 57009749. The reversal of 57009727 is 72790075.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57009727 - 2²³ = 48621119 is a prime.

It is a super-2 number, since 2×57009727² = 6500217945229058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57009767) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 127602 + ... + 128047.

It is an arithmetic number, because the mean of its divisors is an integer number (14316400).

Almost surely, 2^57009727 is an apocalyptic number.

57009727 is a deficient number, since it is larger than the sum of its proper divisors (255873).

57009727 is a wasteful number, since it uses less digits than its factorization.

57009727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255872.

The product of its (nonzero) digits is 30870, while the sum is 37.

The square root of 57009727 is about 7550.4785941025. The cubic root of 57009727 is about 384.8720033273.

The spelling of 57009727 in words is "fifty-seven million, nine thousand, seven hundred twenty-seven".