53640893 has 2 divisors, whose sum is σ = 53640894. Its totient is φ = 53640892.

The previous prime is 53640883. The next prime is 53640913. The reversal of 53640893 is 39804635.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36517849 + 17123044 = 6043^2 + 4138^2 .

It is a cyclic number.

It is not a de Polignac number, because 53640893 - 2⁴ = 53640877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53640883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26820446 + 26820447.

It is an arithmetic number, because the mean of its divisors is an integer number (26820447).

Almost surely, 2^53640893 is an apocalyptic number.

It is an amenable number.

53640893 is a deficient number, since it is larger than the sum of its proper divisors (1).

53640893 is an equidigital number, since it uses as much as digits as its factorization.

53640893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 53640893 is about 7323.9943336952. The cubic root of 53640893 is about 377.1365869445.

The spelling of 53640893 in words is "fifty-three million, six hundred forty thousand, eight hundred ninety-three".