52521971 has 2 divisors, whose sum is σ = 52521972. Its totient is φ = 52521970.

The previous prime is 52521941. The next prime is 52522007. The reversal of 52521971 is 17912525.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52521971 - 2¹⁴ = 52505587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (52521901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26260985 + 26260986.

It is an arithmetic number, because the mean of its divisors is an integer number (26260986).

Almost surely, 2^52521971 is an apocalyptic number.

52521971 is a deficient number, since it is larger than the sum of its proper divisors (1).

52521971 is an equidigital number, since it uses as much as digits as its factorization.

52521971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6300, while the sum is 32.

The square root of 52521971 is about 7247.2043575437. The cubic root of 52521971 is about 374.4958463666.

The spelling of 52521971 in words is "fifty-two million, five hundred twenty-one thousand, nine hundred seventy-one".