57244147 has 2 divisors, whose sum is σ = 57244148. Its totient is φ = 57244146.

The previous prime is 57244123. The next prime is 57244153. The reversal of 57244147 is 74144275.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57244147 is a prime.

It is not a weakly prime, because it can be changed into another prime (57244157) 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 as a sum of consecutive naturals, namely, 28622073 + 28622074.

It is an arithmetic number, because the mean of its divisors is an integer number (28622074).

Almost surely, 2^57244147 is an apocalyptic number.

57244147 is a deficient number, since it is larger than the sum of its proper divisors (1).

57244147 is an equidigital number, since it uses as much as digits as its factorization.

57244147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 34.

The square root of 57244147 is about 7565.9861881978. The cubic root of 57244147 is about 385.3988041601.

The spelling of 57244147 in words is "fifty-seven million, two hundred forty-four thousand, one hundred forty-seven".