52189661 has 2 divisors, whose sum is σ = 52189662. Its totient is φ = 52189660.

The previous prime is 52189651. The next prime is 52189667. The reversal of 52189661 is 16698125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33570436 + 18619225 = 5794^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 52189661 - 2¹⁰ = 52188637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52189667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26094830 + 26094831.

It is an arithmetic number, because the mean of its divisors is an integer number (26094831).

Almost surely, 2^52189661 is an apocalyptic number.

It is an amenable number.

52189661 is a deficient number, since it is larger than the sum of its proper divisors (1).

52189661 is an equidigital number, since it uses as much as digits as its factorization.

52189661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 52189661 is about 7224.2412058292. The cubic root of 52189661 is about 373.7043547050.

The spelling of 52189661 in words is "fifty-two million, one hundred eighty-nine thousand, six hundred sixty-one".