53403473 has 4 divisors (see below), whose sum is σ = 53426100. Its totient is φ = 53380848.

The previous prime is 53403451. The next prime is 53403481. The reversal of 53403473 is 37430435.

It is a happy number.

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 2879809 + 50523664 = 1697^2 + 7108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53403473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53403073) 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, 7298 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (13356525).

Almost surely, 2^53403473 is an apocalyptic number.

It is an amenable number.

53403473 is a deficient number, since it is larger than the sum of its proper divisors (22627).

53403473 is a wasteful number, since it uses less digits than its factorization.

53403473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22626.

The product of its (nonzero) digits is 15120, while the sum is 29.

The square root of 53403473 is about 7307.7679902964. The cubic root of 53403473 is about 376.5793491528.

The spelling of 53403473 in words is "fifty-three million, four hundred three thousand, four hundred seventy-three".