52188397 has 2 divisors, whose sum is σ = 52188398. Its totient is φ = 52188396.

The previous prime is 52188379. The next prime is 52188401. The reversal of 52188397 is 79388125.

Together with previous prime (52188379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48706441 + 3481956 = 6979^2 + 1866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52188397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52188797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26094198 + 26094199.

It is an arithmetic number, because the mean of its divisors is an integer number (26094199).

Almost surely, 2^52188397 is an apocalyptic number.

It is an amenable number.

52188397 is a deficient number, since it is larger than the sum of its proper divisors (1).

52188397 is an equidigital number, since it uses as much as digits as its factorization.

52188397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 43.

The square root of 52188397 is about 7224.1537220632. The cubic root of 52188397 is about 373.7013377210.

The spelling of 52188397 in words is "fifty-two million, one hundred eighty-eight thousand, three hundred ninety-seven".