53128703 has 4 divisors (see below), whose sum is σ = 53180400. Its totient is φ = 53077008.

The previous prime is 53128697. The next prime is 53128711. The reversal of 53128703 is 30782135.

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 53128703 - 2⁸ = 53128447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53128793) 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, 24275 + ... + 26372.

It is an arithmetic number, because the mean of its divisors is an integer number (13295100).

Almost surely, 2^53128703 is an apocalyptic number.

53128703 is a deficient number, since it is larger than the sum of its proper divisors (51697).

53128703 is a wasteful number, since it uses less digits than its factorization.

53128703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51696.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 53128703 is about 7288.9438878345. The cubic root of 53128703 is about 375.9323832500.

The spelling of 53128703 in words is "fifty-three million, one hundred twenty-eight thousand, seven hundred three".