52686397 has 2 divisors, whose sum is σ = 52686398. Its totient is φ = 52686396.

The previous prime is 52686343. The next prime is 52686401. The reversal of 52686397 is 79368625.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40373316 + 12313081 = 6354^2 + 3509^2 .

It is a cyclic number.

It is not a de Polignac number, because 52686397 - 2⁷ = 52686269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52686097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26343198 + 26343199.

It is an arithmetic number, because the mean of its divisors is an integer number (26343199).

Almost surely, 2^52686397 is an apocalyptic number.

It is an amenable number.

52686397 is a deficient number, since it is larger than the sum of its proper divisors (1).

52686397 is an equidigital number, since it uses as much as digits as its factorization.

52686397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 52686397 is about 7258.5395914054. The cubic root of 52686397 is about 374.8862398635.

The spelling of 52686397 in words is "fifty-two million, six hundred eighty-six thousand, three hundred ninety-seven".