52638197 has 2 divisors, whose sum is σ = 52638198. Its totient is φ = 52638196.

The previous prime is 52638143. The next prime is 52638199. The reversal of 52638197 is 79183625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52432081 + 206116 = 7241^2 + 454^2 .

It is a cyclic number.

It is not a de Polignac number, because 52638197 - 2⁸ = 52637941 is a prime.

Together with 52638199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52638199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26319098 + 26319099.

It is an arithmetic number, because the mean of its divisors is an integer number (26319099).

Almost surely, 2^52638197 is an apocalyptic number.

It is an amenable number.

52638197 is a deficient number, since it is larger than the sum of its proper divisors (1).

52638197 is an equidigital number, since it uses as much as digits as its factorization.

52638197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 52638197 is about 7255.2186045632. The cubic root of 52638197 is about 374.7718837813.

The spelling of 52638197 in words is "fifty-two million, six hundred thirty-eight thousand, one hundred ninety-seven".