53505773 has 4 divisors (see below), whose sum is σ = 53567388. Its totient is φ = 53444160.

The previous prime is 53505733. The next prime is 53505799. The reversal of 53505773 is 37750535.

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 14730244 + 38775529 = 3838^2 + 6227^2 .

It is a cyclic number.

It is not a de Polignac number, because 53505773 - 2⁶ = 53505709 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 (53505703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29486 + ... + 31247.

It is an arithmetic number, because the mean of its divisors is an integer number (13391847).

Almost surely, 2^53505773 is an apocalyptic number.

It is an amenable number.

53505773 is a deficient number, since it is larger than the sum of its proper divisors (61615).

53505773 is an equidigital number, since it uses as much as digits as its factorization.

53505773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61614.

The product of its (nonzero) digits is 55125, while the sum is 35.

The square root of 53505773 is about 7314.7640426742. The cubic root of 53505773 is about 376.8196549633.

The spelling of 53505773 in words is "fifty-three million, five hundred five thousand, seven hundred seventy-three".