53072689 has 4 divisors (see below), whose sum is σ = 54507124. Its totient is φ = 51638256.

The previous prime is 53072687. The next prime is 53072699. The reversal of 53072689 is 98627035.

53072689 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.

It can be written as a sum of positive squares in 2 ways, for example, as 40857664 + 12215025 = 6392^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 53072689 - 2¹ = 53072687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53072687) 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, 717162 + ... + 717235.

It is an arithmetic number, because the mean of its divisors is an integer number (13626781).

Almost surely, 2^53072689 is an apocalyptic number.

It is an amenable number.

53072689 is a deficient number, since it is larger than the sum of its proper divisors (1434435).

53072689 is a wasteful number, since it uses less digits than its factorization.

53072689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434434.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 53072689 is about 7285.1004797463. The cubic root of 53072689 is about 375.8002206586.

The spelling of 53072689 in words is "fifty-three million, seventy-two thousand, six hundred eighty-nine".