53289581 has 4 divisors (see below), whose sum is σ = 53709312. Its totient is φ = 52869852.

The previous prime is 53289563. The next prime is 53289631. The reversal of 53289581 is 18598235.

53289581 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.

It is a cyclic number.

It is not a de Polignac number, because 53289581 - 2¹⁴ = 53273197 is a prime.

It is a super-2 number, since 2×53289581² = 5679558886311122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53289521) 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, 209675 + ... + 209928.

It is an arithmetic number, because the mean of its divisors is an integer number (13427328).

Almost surely, 2^53289581 is an apocalyptic number.

It is an amenable number.

53289581 is a deficient number, since it is larger than the sum of its proper divisors (419731).

53289581 is a wasteful number, since it uses less digits than its factorization.

53289581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419730.

The product of its digits is 86400, while the sum is 41.

The square root of 53289581 is about 7299.9713013135. The cubic root of 53289581 is about 376.3114520878.

The spelling of 53289581 in words is "fifty-three million, two hundred eighty-nine thousand, five hundred eighty-one".