52771861 has 2 divisors, whose sum is σ = 52771862. Its totient is φ = 52771860.

The previous prime is 52771853. The next prime is 52771877. The reversal of 52771861 is 16817725.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43956900 + 8814961 = 6630^2 + 2969^2 .

It is a cyclic number.

It is not a de Polignac number, because 52771861 - 2³ = 52771853 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52771861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52771801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26385930 + 26385931.

It is an arithmetic number, because the mean of its divisors is an integer number (26385931).

Almost surely, 2^52771861 is an apocalyptic number.

It is an amenable number.

52771861 is a deficient number, since it is larger than the sum of its proper divisors (1).

52771861 is an equidigital number, since it uses as much as digits as its factorization.

52771861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 37.

The square root of 52771861 is about 7264.4243405792. The cubic root of 52771861 is about 375.0888346578.

The spelling of 52771861 in words is "fifty-two million, seven hundred seventy-one thousand, eight hundred sixty-one".