52147961 has 2 divisors, whose sum is σ = 52147962. Its totient is φ = 52147960.

The previous prime is 52147939. The next prime is 52147967. The reversal of 52147961 is 16974125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43033600 + 9114361 = 6560^2 + 3019^2 .

It is a cyclic number.

It is not a de Polignac number, because 52147961 - 2⁶ = 52147897 is a prime.

It is not a weakly prime, because it can be changed into another prime (52147967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26073980 + 26073981.

It is an arithmetic number, because the mean of its divisors is an integer number (26073981).

Almost surely, 2^52147961 is an apocalyptic number.

It is an amenable number.

52147961 is a deficient number, since it is larger than the sum of its proper divisors (1).

52147961 is an equidigital number, since it uses as much as digits as its factorization.

52147961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 52147961 is about 7221.3545128321. The cubic root of 52147961 is about 373.6047971580.

The spelling of 52147961 in words is "fifty-two million, one hundred forty-seven thousand, nine hundred sixty-one".