52145173 has 4 divisors (see below), whose sum is σ = 53554540. Its totient is φ = 50735808.

The previous prime is 52145147. The next prime is 52145183. The reversal of 52145173 is 37154125.

It is a happy number.

52145173 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 41757444 + 10387729 = 6462^2 + 3223^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52145173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52145183) 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 3 ways as a sum of consecutive naturals, for example, 704628 + ... + 704701.

It is an arithmetic number, because the mean of its divisors is an integer number (13388635).

Almost surely, 2^52145173 is an apocalyptic number.

It is an amenable number.

52145173 is a deficient number, since it is larger than the sum of its proper divisors (1409367).

52145173 is a wasteful number, since it uses less digits than its factorization.

52145173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409366.

The product of its digits is 4200, while the sum is 28.

The square root of 52145173 is about 7221.1614716748. The cubic root of 52145173 is about 373.5981389959.

Adding to 52145173 its reverse (37154125), we get a palindrome (89299298).

The spelling of 52145173 in words is "fifty-two million, one hundred forty-five thousand, one hundred seventy-three".