57440307 has 8 divisors (see below), whose sum is σ = 76925376. Its totient is φ = 38124392.

The previous prime is 57440293. The next prime is 57440309. The reversal of 57440307 is 70304475.

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 57440307 - 2⁸ = 57440051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57440309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41493 + ... + 42854.

It is an arithmetic number, because the mean of its divisors is an integer number (9615672).

Almost surely, 2^57440307 is an apocalyptic number.

57440307 is a deficient number, since it is larger than the sum of its proper divisors (19485069).

57440307 is a wasteful number, since it uses less digits than its factorization.

57440307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84577.

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 57440307 is about 7578.9383821219. The cubic root of 57440307 is about 385.8385209643.

The spelling of 57440307 in words is "fifty-seven million, four hundred forty thousand, three hundred seven".