53173869 has 12 divisors (see below), whose sum is σ = 82473984. Its totient is φ = 30384984.

The previous prime is 53173831. The next prime is 53173871. The reversal of 53173869 is 96837135.

It is not a de Polignac number, because 53173869 - 2⁷ = 53173741 is a prime.

It is a super-2 number, since 2×53173869² = 5654920688858322, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53173869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53173819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 180717 + ... + 181010.

It is an arithmetic number, because the mean of its divisors is an integer number (6872832).

Almost surely, 2^53173869 is an apocalyptic number.

It is an amenable number.

53173869 is a deficient number, since it is larger than the sum of its proper divisors (29300115).

53173869 is a wasteful number, since it uses less digits than its factorization.

53173869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361744 (or 361737 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 53173869 is about 7292.0414836999. The cubic root of 53173869 is about 376.0388828244.

The spelling of 53173869 in words is "fifty-three million, one hundred seventy-three thousand, eight hundred sixty-nine".