53164681 has 4 divisors (see below), whose sum is σ = 53278992. Its totient is φ = 53050372.

The previous prime is 53164673. The next prime is 53164687. The reversal of 53164681 is 18646135.

It is a happy number.

53164681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an emirpimes, since its reverse is a distinct semiprime: 18646135 = 5 ⋅3729227.

It is a cyclic number.

It is not a de Polignac number, because 53164681 - 2³ = 53164673 is a prime.

It is a super-4 number, since 4×53164681⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53164687) 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 3 ways as a sum of consecutive naturals, for example, 56455 + ... + 57388.

It is an arithmetic number, because the mean of its divisors is an integer number (13319748).

Almost surely, 2^53164681 is an apocalyptic number.

It is an amenable number.

53164681 is a deficient number, since it is larger than the sum of its proper divisors (114311).

53164681 is a wasteful number, since it uses less digits than its factorization.

53164681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114310.

The product of its digits is 17280, while the sum is 34.

The square root of 53164681 is about 7291.4114545813. The cubic root of 53164681 is about 376.0172227851.

The spelling of 53164681 in words is "fifty-three million, one hundred sixty-four thousand, six hundred eighty-one".