53473643 has 4 divisors (see below), whose sum is σ = 55798608. Its totient is φ = 51148680.

The previous prime is 53473633. The next prime is 53473649. The reversal of 53473643 is 34637435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53473643 - 2¹⁰ = 53472619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53473649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1162448 + ... + 1162493.

It is an arithmetic number, because the mean of its divisors is an integer number (13949652).

Almost surely, 2^53473643 is an apocalyptic number.

53473643 is a deficient number, since it is larger than the sum of its proper divisors (2324965).

53473643 is a wasteful number, since it uses less digits than its factorization.

53473643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324964.

The product of its digits is 90720, while the sum is 35.

The square root of 53473643 is about 7312.5674697742. The cubic root of 53473643 is about 376.7442136350.

The spelling of 53473643 in words is "fifty-three million, four hundred seventy-three thousand, six hundred forty-three".