53999173 has 8 divisors (see below), whose sum is σ = 55434456. Its totient is φ = 52569600.

The previous prime is 53999171. The next prime is 53999203. The reversal of 53999173 is 37199935.

It can be written as a sum of positive squares in 4 ways, for example, as 3560769 + 50438404 = 1887^2 + 7102^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53999173 - 2¹ = 53999171 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53999171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23203 + ... + 25423.

It is an arithmetic number, because the mean of its divisors is an integer number (6929307).

Almost surely, 2^53999173 is an apocalyptic number.

It is an amenable number.

53999173 is a deficient number, since it is larger than the sum of its proper divisors (1435283).

53999173 is a wasteful number, since it uses less digits than its factorization.

53999173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855.

The product of its digits is 229635, while the sum is 46.

The square root of 53999173 is about 7348.4129579114. The cubic root of 53999173 is about 377.9743854129.

The spelling of 53999173 in words is "fifty-three million, nine hundred ninety-nine thousand, one hundred seventy-three".