53889569 has 4 divisors (see below), whose sum is σ = 55747860. Its totient is φ = 52031280.

The previous prime is 53889557. The next prime is 53889581. The reversal of 53889569 is 96598835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96598835 = 5 ⋅19319767.

It is an interprime number because it is at equal distance from previous prime (53889557) and next prime (53889581).

It can be written as a sum of positive squares in 2 ways, for example, as 32913169 + 20976400 = 5737^2 + 4580^2 .

It is a cyclic number.

It is not a de Polignac number, because 53889569 - 2¹² = 53885473 is a prime.

It is a super-2 number, since 2×53889569² = 5808171294011522, 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 53889569.

It is not an unprimeable number, because it can be changed into a prime (53889509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929102 + ... + 929159.

It is an arithmetic number, because the mean of its divisors is an integer number (13936965).

Almost surely, 2^53889569 is an apocalyptic number.

It is an amenable number.

53889569 is a deficient number, since it is larger than the sum of its proper divisors (1858291).

53889569 is a wasteful number, since it uses less digits than its factorization.

53889569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858290.

The product of its digits is 2332800, while the sum is 53.

The square root of 53889569 is about 7340.9515050843. The cubic root of 53889569 is about 377.7184829435.

The spelling of 53889569 in words is "fifty-three million, eight hundred eighty-nine thousand, five hundred sixty-nine".