53728579 has 2 divisors, whose sum is σ = 53728580. Its totient is φ = 53728578.

The previous prime is 53728553. The next prime is 53728613. The reversal of 53728579 is 97582735.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53728579 - 2⁵ = 53728547 is a prime.

It is not a weakly prime, because it can be changed into another prime (53728679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26864289 + 26864290.

It is an arithmetic number, because the mean of its divisors is an integer number (26864290).

Almost surely, 2^53728579 is an apocalyptic number.

53728579 is a deficient number, since it is larger than the sum of its proper divisors (1).

53728579 is an equidigital number, since it uses as much as digits as its factorization.

53728579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 529200, while the sum is 46.

The square root of 53728579 is about 7329.9781036508. The cubic root of 53728579 is about 377.3419749970.

The spelling of 53728579 in words is "fifty-three million, seven hundred twenty-eight thousand, five hundred seventy-nine".