53649773 has 8 divisors (see below), whose sum is σ = 56872440. Its totient is φ = 50434560.

The previous prime is 53649763. The next prime is 53649779. The reversal of 53649773 is 37794635.

53649773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 19695844 + 33953929 = 4438^2 + 5827^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53649773 is a prime.

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 (53649779) 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 7 ways as a sum of consecutive naturals, for example, 21263 + ... + 23651.

It is an arithmetic number, because the mean of its divisors is an integer number (7109055).

Almost surely, 2^53649773 is an apocalyptic number.

It is an amenable number.

53649773 is a deficient number, since it is larger than the sum of its proper divisors (3222667).

53649773 is a wasteful number, since it uses less digits than its factorization.

53649773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727.

The product of its digits is 476280, while the sum is 44.

The square root of 53649773 is about 7324.6005351828. The cubic root of 53649773 is about 377.1573968647.

The spelling of 53649773 in words is "fifty-three million, six hundred forty-nine thousand, seven hundred seventy-three".