52399901 has 2 divisors, whose sum is σ = 52399902. Its totient is φ = 52399900.

The previous prime is 52399801. The next prime is 52399903. The reversal of 52399901 is 10999325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31651876 + 20748025 = 5626^2 + 4555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52399901 is a prime.

It is a Sophie Germain prime.

Together with 52399903, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52399903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26199950 + 26199951.

It is an arithmetic number, because the mean of its divisors is an integer number (26199951).

Almost surely, 2^52399901 is an apocalyptic number.

It is an amenable number.

52399901 is a deficient number, since it is larger than the sum of its proper divisors (1).

52399901 is an equidigital number, since it uses as much as digits as its factorization.

52399901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 52399901 is about 7238.7775901736. Note that the first 3 decimals coincide. The cubic root of 52399901 is about 374.2054906091.

The spelling of 52399901 in words is "fifty-two million, three hundred ninety-nine thousand, nine hundred one".