53769665 has 4 divisors (see below), whose sum is σ = 64523604. Its totient is φ = 43015728.

The previous prime is 53769619. The next prime is 53769671. The reversal of 53769665 is 56696735.

53769665 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 41770369 + 11999296 = 6463^2 + 3464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53769665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 5376962 + ... + 5376971.

It is an arithmetic number, because the mean of its divisors is an integer number (16130901).

Almost surely, 2^53769665 is an apocalyptic number.

It is an amenable number.

53769665 is a deficient number, since it is larger than the sum of its proper divisors (10753939).

53769665 is a wasteful number, since it uses less digits than its factorization.

53769665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10753938.

The product of its digits is 1020600, while the sum is 47.

The square root of 53769665 is about 7332.7801685309. The cubic root of 53769665 is about 377.4381343877.

The spelling of 53769665 in words is "fifty-three million, seven hundred sixty-nine thousand, six hundred sixty-five".