53728907 has 2 divisors, whose sum is σ = 53728908. Its totient is φ = 53728906.

The previous prime is 53728889. The next prime is 53728933. The reversal of 53728907 is 70982735.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53728907 - 2⁸ = 53728651 is a prime.

It is not a weakly prime, because it can be changed into another prime (53728937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26864453 + 26864454.

It is an arithmetic number, because the mean of its divisors is an integer number (26864454).

Almost surely, 2^53728907 is an apocalyptic number.

53728907 is a deficient number, since it is larger than the sum of its proper divisors (1).

53728907 is an equidigital number, since it uses as much as digits as its factorization.

53728907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 53728907 is about 7330.0004774898. Note that the first 3 decimals coincide. The cubic root of 53728907 is about 377.3427428560.

The spelling of 53728907 in words is "fifty-three million, seven hundred twenty-eight thousand, nine hundred seven".