53611989 has 8 divisors (see below), whose sum is σ = 73788672. Its totient is φ = 34588320.

The previous prime is 53611973. The next prime is 53612021. The reversal of 53611989 is 98911635.

53611989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53611989 - 2⁴ = 53611973 is a prime.

It is a super-2 number, since 2×53611989² = 5748490729072242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 53611989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53611949) 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 7 ways as a sum of consecutive naturals, for example, 288144 + ... + 288329.

It is an arithmetic number, because the mean of its divisors is an integer number (9223584).

Almost surely, 2^53611989 is an apocalyptic number.

It is an amenable number.

53611989 is a deficient number, since it is larger than the sum of its proper divisors (20176683).

53611989 is a wasteful number, since it uses less digits than its factorization.

53611989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576507.

The product of its digits is 58320, while the sum is 42.

The square root of 53611989 is about 7322.0208276131. The cubic root of 53611989 is about 377.0688356835.

The spelling of 53611989 in words is "fifty-three million, six hundred eleven thousand, nine hundred eighty-nine".