52990397 has 2 divisors, whose sum is σ = 52990398. Its totient is φ = 52990396.

The previous prime is 52990393. The next prime is 52990403. The reversal of 52990397 is 79309925.

52990397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35593156 + 17397241 = 5966^2 + 4171^2 .

It is a cyclic number.

It is not a de Polignac number, because 52990397 - 2² = 52990393 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52990391) 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, 26495198 + 26495199.

It is an arithmetic number, because the mean of its divisors is an integer number (26495199).

Almost surely, 2^52990397 is an apocalyptic number.

It is an amenable number.

52990397 is a deficient number, since it is larger than the sum of its proper divisors (1).

52990397 is an equidigital number, since it uses as much as digits as its factorization.

52990397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 52990397 is about 7279.4503226549. The cubic root of 52990397 is about 375.6058875033.

The spelling of 52990397 in words is "fifty-two million, nine hundred ninety thousand, three hundred ninety-seven".