52728975 has 60 divisors (see below), whose sum is σ = 105238056. Its totient is φ = 25945920.

The previous prime is 52728937. The next prime is 52728983. The reversal of 52728975 is 57982725.

It is a happy number.

It is not a de Polignac number, because 52728975 - 2⁹ = 52728463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 52728975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 25324 + ... + 27326.

Almost surely, 2^52728975 is an apocalyptic number.

52728975 is a deficient number, since it is larger than the sum of its proper divisors (52509081).

52728975 is a wasteful number, since it uses less digits than its factorization.

52728975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038 (or 2024 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The square root of 52728975 is about 7261.4719582189. The cubic root of 52728975 is about 374.9871995631.

The spelling of 52728975 in words is "fifty-two million, seven hundred twenty-eight thousand, nine hundred seventy-five".