52870009 has 2 divisors, whose sum is σ = 52870010. Its totient is φ = 52870008.

The previous prime is 52870007. The next prime is 52870019. The reversal of 52870009 is 90007825.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52707600 + 162409 = 7260^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 52870009 - 2¹ = 52870007 is a prime.

Together with 52870007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (52870001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26435004 + 26435005.

It is an arithmetic number, because the mean of its divisors is an integer number (26435005).

Almost surely, 2^52870009 is an apocalyptic number.

It is an amenable number.

52870009 is a deficient number, since it is larger than the sum of its proper divisors (1).

52870009 is an equidigital number, since it uses as much as digits as its factorization.

52870009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 52870009 is about 7271.1765897962. The cubic root of 52870009 is about 375.3212275705.

The spelling of 52870009 in words is "fifty-two million, eight hundred seventy thousand, nine".