53243315 has 4 divisors (see below), whose sum is σ = 63891984. Its totient is φ = 42594648.

The previous prime is 53243279. The next prime is 53243327. The reversal of 53243315 is 51334235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51334235 = 5 ⋅10266847.

It is a cyclic number.

It is not a de Polignac number, because 53243315 - 2⁶ = 53243251 is a prime.

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, 5324327 + ... + 5324336.

It is an arithmetic number, because the mean of its divisors is an integer number (15972996).

Almost surely, 2^53243315 is an apocalyptic number.

53243315 is a deficient number, since it is larger than the sum of its proper divisors (10648669).

53243315 is a wasteful number, since it uses less digits than its factorization.

53243315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10648668.

The product of its digits is 5400, while the sum is 26.

The square root of 53243315 is about 7296.8016966339. The cubic root of 53243315 is about 376.2025160548.

The spelling of 53243315 in words is "fifty-three million, two hundred forty-three thousand, three hundred fifteen".