57147967 has 2 divisors, whose sum is σ = 57147968. Its totient is φ = 57147966.

The previous prime is 57147949. The next prime is 57147983. The reversal of 57147967 is 76974175.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57147967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57147947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28573983 + 28573984.

It is an arithmetic number, because the mean of its divisors is an integer number (28573984).

Almost surely, 2^57147967 is an apocalyptic number.

57147967 is a deficient number, since it is larger than the sum of its proper divisors (1).

57147967 is an equidigital number, since it uses as much as digits as its factorization.

57147967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 370440, while the sum is 46.

The square root of 57147967 is about 7559.6274379099. The cubic root of 57147967 is about 385.1828377639.

The spelling of 57147967 in words is "fifty-seven million, one hundred forty-seven thousand, nine hundred sixty-seven".