57307907 has 4 divisors (see below), whose sum is σ = 57457920. Its totient is φ = 57157896.

The previous prime is 57307903. The next prime is 57307961. The reversal of 57307907 is 70970375.

It is a happy number.

57307907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57307907 - 2² = 57307903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57307903) 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 3 ways as a sum of consecutive naturals, for example, 74432 + ... + 75197.

It is an arithmetic number, because the mean of its divisors is an integer number (14364480).

Almost surely, 2^57307907 is an apocalyptic number.

57307907 is a deficient number, since it is larger than the sum of its proper divisors (150013).

57307907 is a wasteful number, since it uses less digits than its factorization.

57307907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150012.

The product of its (nonzero) digits is 46305, while the sum is 38.

The square root of 57307907 is about 7570.1986103404. The cubic root of 57307907 is about 385.5418400937.

The spelling of 57307907 in words is "fifty-seven million, three hundred seven thousand, nine hundred seven".