53928691 has 2 divisors, whose sum is σ = 53928692. Its totient is φ = 53928690.

The previous prime is 53928683. The next prime is 53928733. The reversal of 53928691 is 19682935.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53928691 - 2³ = 53928683 is a prime.

It is not a weakly prime, because it can be changed into another prime (53928671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26964345 + 26964346.

It is an arithmetic number, because the mean of its divisors is an integer number (26964346).

Almost surely, 2^53928691 is an apocalyptic number.

53928691 is a deficient number, since it is larger than the sum of its proper divisors (1).

53928691 is an equidigital number, since it uses as much as digits as its factorization.

53928691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 53928691 is about 7343.6156626011. The cubic root of 53928691 is about 377.8098644379.

The spelling of 53928691 in words is "fifty-three million, nine hundred twenty-eight thousand, six hundred ninety-one".