52811947 has 2 divisors, whose sum is σ = 52811948. Its totient is φ = 52811946.

The previous prime is 52811939. The next prime is 52811953. The reversal of 52811947 is 74911825.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52811947 - 2³ = 52811939 is a prime.

It is not a weakly prime, because it can be changed into another prime (52811147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26405973 + 26405974.

It is an arithmetic number, because the mean of its divisors is an integer number (26405974).

Almost surely, 2^52811947 is an apocalyptic number.

52811947 is a deficient number, since it is larger than the sum of its proper divisors (1).

52811947 is an equidigital number, since it uses as much as digits as its factorization.

52811947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 52811947 is about 7267.1828792181. The cubic root of 52811947 is about 375.1837842846.

The spelling of 52811947 in words is "fifty-two million, eight hundred eleven thousand, nine hundred forty-seven".