53187773 has 4 divisors (see below), whose sum is σ = 53219868. Its totient is φ = 53155680.

The previous prime is 53187751. The next prime is 53187803. The reversal of 53187773 is 37778135.

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 4439449 + 48748324 = 2107^2 + 6982^2 .

It is a cyclic number.

It is not a de Polignac number, because 53187773 - 2⁶ = 53187709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53187773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53186773) 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, 13418 + ... + 16923.

It is an arithmetic number, because the mean of its divisors is an integer number (13304967).

Almost surely, 2^53187773 is an apocalyptic number.

It is an amenable number.

53187773 is a deficient number, since it is larger than the sum of its proper divisors (32095).

53187773 is a wasteful number, since it uses less digits than its factorization.

53187773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32094.

The product of its digits is 123480, while the sum is 41.

The square root of 53187773 is about 7292.9947895223. The cubic root of 53187773 is about 376.0716557451.

The spelling of 53187773 in words is "fifty-three million, one hundred eighty-seven thousand, seven hundred seventy-three".