57098947 has 2 divisors, whose sum is σ = 57098948. Its totient is φ = 57098946.

The previous prime is 57098893. The next prime is 57098963. The reversal of 57098947 is 74989075.

It is a happy number.

57098947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57098947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57098947.

It is not a weakly prime, because it can be changed into another prime (57098047) 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 as a sum of consecutive naturals, namely, 28549473 + 28549474.

It is an arithmetic number, because the mean of its divisors is an integer number (28549474).

Almost surely, 2^57098947 is an apocalyptic number.

57098947 is a deficient number, since it is larger than the sum of its proper divisors (1).

57098947 is an equidigital number, since it uses as much as digits as its factorization.

57098947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 57098947 is about 7556.3845190673. The cubic root of 57098947 is about 385.0726730750.

The spelling of 57098947 in words is "fifty-seven million, ninety-eight thousand, nine hundred forty-seven".