53173265 has 4 divisors (see below), whose sum is σ = 63807924. Its totient is φ = 42538608.

The previous prime is 53173247. The next prime is 53173271. The reversal of 53173265 is 56237135.

It is a Cunningham number, because it is equal to 7292²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56237135 = 5 ⋅11247427.

It can be written as a sum of positive squares in 2 ways, for example, as 19149376 + 34023889 = 4376^2 + 5833^2 .

It is a cyclic number.

It is not a de Polignac number, because 53173265 - 2⁶ = 53173201 is a prime.

It is a super-2 number, since 2×53173265² = 5654792221520450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5317322 + ... + 5317331.

It is an arithmetic number, because the mean of its divisors is an integer number (15951981).

Almost surely, 2^53173265 is an apocalyptic number.

It is an amenable number.

53173265 is a deficient number, since it is larger than the sum of its proper divisors (10634659).

53173265 is a wasteful number, since it uses less digits than its factorization.

53173265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10634658.

The product of its digits is 18900, while the sum is 32.

The square root of 53173265 is about 7292.0000685683. Note that the first 4 decimals coincide. The cubic root of 53173265 is about 376.0374590151.

The spelling of 53173265 in words is "fifty-three million, one hundred seventy-three thousand, two hundred sixty-five".