57432247 has 2 divisors, whose sum is σ = 57432248. Its totient is φ = 57432246.

The previous prime is 57432241. The next prime is 57432257. The reversal of 57432247 is 74223475.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57432247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57432241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28716123 + 28716124.

It is an arithmetic number, because the mean of its divisors is an integer number (28716124).

Almost surely, 2^57432247 is an apocalyptic number.

57432247 is a deficient number, since it is larger than the sum of its proper divisors (1).

57432247 is an equidigital number, since it uses as much as digits as its factorization.

57432247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 34.

The square root of 57432247 is about 7578.4066267257. The cubic root of 57432247 is about 385.8204732199.

The spelling of 57432247 in words is "fifty-seven million, four hundred thirty-two thousand, two hundred forty-seven".