52021961 has 2 divisors, whose sum is σ = 52021962. Its totient is φ = 52021960.

The previous prime is 52021951. The next prime is 52021967. The reversal of 52021961 is 16912025.

52021961 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 can be written as a sum of positive squares in only one way, i.e., 49266361 + 2755600 = 7019^2 + 1660^2 .

It is a cyclic number.

It is not a de Polignac number, because 52021961 - 2⁶ = 52021897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52021961.

It is not a weakly prime, because it can be changed into another prime (52021967) 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, 26010980 + 26010981.

It is an arithmetic number, because the mean of its divisors is an integer number (26010981).

Almost surely, 2^52021961 is an apocalyptic number.

It is an amenable number.

52021961 is a deficient number, since it is larger than the sum of its proper divisors (1).

52021961 is an equidigital number, since it uses as much as digits as its factorization.

52021961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 52021961 is about 7212.6251115665. The cubic root of 52021961 is about 373.3036529515.

Adding to 52021961 its reverse (16912025), we get a palindrome (68933986).

The spelling of 52021961 in words is "fifty-two million, twenty-one thousand, nine hundred sixty-one".