53159989 has 4 divisors (see below), whose sum is σ = 53174880. Its totient is φ = 53145100.

The previous prime is 53159921. The next prime is 53160013. The reversal of 53159989 is 98995135.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 98995135 = 5 ⋅19799027.

It is a cyclic number.

It is not a de Polignac number, because 53159989 - 2¹¹ = 53157941 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53156989) 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, 1464 + ... + 10414.

It is an arithmetic number, because the mean of its divisors is an integer number (13293720).

It is a vampire number, since it can be written as 5939 ⋅ 8951 (with its own digits).

Almost surely, 2^53159989 is an apocalyptic number.

It is an amenable number.

53159989 is a deficient number, since it is larger than the sum of its proper divisors (14891).

53159989 is an equidigital number, since it uses as much as digits as its factorization.

53159989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14890.

The product of its digits is 437400, while the sum is 49.

The square root of 53159989 is about 7291.0896990779. The cubic root of 53159989 is about 376.0061607750.

The spelling of 53159989 in words is "fifty-three million, one hundred fifty-nine thousand, nine hundred eighty-nine".