53167509 has 10 divisors (see below), whose sum is σ = 79423190. Its totient is φ = 35444952.

The previous prime is 53167501. The next prime is 53167519. The reversal of 53167509 is 90576135.

It is a happy number.

53167509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 53144100 + 23409 = 7290^2 + 153^2 .

It is not a de Polignac number, because 53167509 - 2³ = 53167501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53167501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 328114 + ... + 328275.

It is an arithmetic number, because the mean of its divisors is an integer number (7942319).

Almost surely, 2^53167509 is an apocalyptic number.

It is an amenable number.

53167509 is a deficient number, since it is larger than the sum of its proper divisors (26255681).

53167509 is an equidigital number, since it uses as much as digits as its factorization.

53167509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656401 (or 656392 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 53167509 is about 7291.6053787901. The cubic root of 53167509 is about 376.0238898545.

The spelling of 53167509 in words is "fifty-three million, one hundred sixty-seven thousand, five hundred nine".