57945247 has 2 divisors, whose sum is σ = 57945248. Its totient is φ = 57945246.

The previous prime is 57945241. The next prime is 57945289. The reversal of 57945247 is 74254975.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57945247 - 2¹¹ = 57943199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57945241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28972623 + 28972624.

It is an arithmetic number, because the mean of its divisors is an integer number (28972624).

Almost surely, 2^57945247 is an apocalyptic number.

57945247 is a deficient number, since it is larger than the sum of its proper divisors (1).

57945247 is an equidigital number, since it uses as much as digits as its factorization.

57945247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 43.

The square root of 57945247 is about 7612.1775465369. The cubic root of 57945247 is about 386.9658199041.

The spelling of 57945247 in words is "fifty-seven million, nine hundred forty-five thousand, two hundred forty-seven".