53173453 has 4 divisors (see below), whose sum is σ = 53480988. Its totient is φ = 52865920.

The previous prime is 53173451. The next prime is 53173487. The reversal of 53173453 is 35437135.

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 23164969 + 30008484 = 4813^2 + 5478^2 .

It is a cyclic number.

It is not a de Polignac number, because 53173453 - 2¹ = 53173451 is a prime.

It is a super-2 number, since 2×53173453² = 5654832207886418, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53173451) 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, 153508 + ... + 153853.

It is an arithmetic number, because the mean of its divisors is an integer number (13370247).

Almost surely, 2^53173453 is an apocalyptic number.

It is an amenable number.

53173453 is a deficient number, since it is larger than the sum of its proper divisors (307535).

53173453 is a wasteful number, since it uses less digits than its factorization.

53173453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307534.

The product of its digits is 18900, while the sum is 31.

The square root of 53173453 is about 7292.0129593961. The cubic root of 53173453 is about 376.0379021887.

It can be divided in two parts, 531 and 73453, that added together give a square (73984 = 272²).

The spelling of 53173453 in words is "fifty-three million, one hundred seventy-three thousand, four hundred fifty-three".