51728541 has 16 divisors (see below), whose sum is σ = 72990720. Its totient is φ = 32518640.

The previous prime is 51728531. The next prime is 51728561. The reversal of 51728541 is 14582715.

It is a cyclic number.

It is not a de Polignac number, because 51728541 - 2¹⁵ = 51695773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51728531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381 + ... + 10178.

It is an arithmetic number, because the mean of its divisors is an integer number (4561920).

Almost surely, 2^51728541 is an apocalyptic number.

It is an amenable number.

51728541 is a deficient number, since it is larger than the sum of its proper divisors (21262179).

51728541 is a wasteful number, since it uses less digits than its factorization.

51728541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10656.

The product of its digits is 11200, while the sum is 33.

The square root of 51728541 is about 7192.2556267141. The cubic root of 51728541 is about 372.6004797778.

The spelling of 51728541 in words is "fifty-one million, seven hundred twenty-eight thousand, five hundred forty-one".