52728777 has 6 divisors (see below), whose sum is σ = 76163802. Its totient is φ = 35152512.

The previous prime is 52728773. The next prime is 52728779. The reversal of 52728777 is 77782725.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 46498761 + 6230016 = 6819^2 + 2496^2 .

It is not a de Polignac number, because 52728777 - 2² = 52728773 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52728773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2929368 + ... + 2929385.

It is an arithmetic number, because the mean of its divisors is an integer number (12693967).

Almost surely, 2^52728777 is an apocalyptic number.

It is an amenable number.

52728777 is a deficient number, since it is larger than the sum of its proper divisors (23435025).

52728777 is a wasteful number, since it uses less digits than its factorization.

52728777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5858759 (or 5858756 counting only the distinct ones).

The product of its digits is 384160, while the sum is 45.

The square root of 52728777 is about 7261.4583246067. The cubic root of 52728777 is about 374.9867301971.

The spelling of 52728777 in words is "fifty-two million, seven hundred twenty-eight thousand, seven hundred seventy-seven".