53163509 has 4 divisors (see below), whose sum is σ = 60758304. Its totient is φ = 45568716.

The previous prime is 53163493. The next prime is 53163541. The reversal of 53163509 is 90536135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53163509 - 2⁴ = 53163493 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 (53163559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3797387 + ... + 3797400.

It is an arithmetic number, because the mean of its divisors is an integer number (15189576).

Almost surely, 2^53163509 is an apocalyptic number.

It is an amenable number.

53163509 is a deficient number, since it is larger than the sum of its proper divisors (7594795).

53163509 is an equidigital number, since it uses as much as digits as its factorization.

53163509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7594794.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 53163509 is about 7291.3310856112. The cubic root of 53163509 is about 376.0144597012.

The spelling of 53163509 in words is "fifty-three million, one hundred sixty-three thousand, five hundred nine".