52404689 has 2 divisors, whose sum is σ = 52404690. Its totient is φ = 52404688.

The previous prime is 52404661. The next prime is 52404719. The reversal of 52404689 is 98640425.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40960000 + 11444689 = 6400^2 + 3383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52404689 is a prime.

It is not a weakly prime, because it can be changed into another prime (52404619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26202344 + 26202345.

It is an arithmetic number, because the mean of its divisors is an integer number (26202345).

Almost surely, 2^52404689 is an apocalyptic number.

It is an amenable number.

52404689 is a deficient number, since it is larger than the sum of its proper divisors (1).

52404689 is an equidigital number, since it uses as much as digits as its factorization.

52404689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 52404689 is about 7239.1083014416. The cubic root of 52404689 is about 374.2168878400.

It can be divided in two parts, 52 and 404689, that multiplied together give a triangular number (21043828 = T₆₄₈₇).

The spelling of 52404689 in words is "fifty-two million, four hundred four thousand, six hundred eighty-nine".