52521901 has 2 divisors, whose sum is σ = 52521902. Its totient is φ = 52521900.

The previous prime is 52521893. The next prime is 52521941. The reversal of 52521901 is 10912525.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52272900 + 249001 = 7230^2 + 499^2 .

It is a cyclic number.

It is not a de Polignac number, because 52521901 - 2³ = 52521893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52521941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26260950 + 26260951.

It is an arithmetic number, because the mean of its divisors is an integer number (26260951).

Almost surely, 2^52521901 is an apocalyptic number.

It is an amenable number.

52521901 is a deficient number, since it is larger than the sum of its proper divisors (1).

52521901 is an equidigital number, since it uses as much as digits as its factorization.

52521901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 52521901 is about 7247.1995280936. The cubic root of 52521901 is about 374.4956799935.

The spelling of 52521901 in words is "fifty-two million, five hundred twenty-one thousand, nine hundred one".