53987893 has 2 divisors, whose sum is σ = 53987894. Its totient is φ = 53987892.

The previous prime is 53987881. The next prime is 53987909. The reversal of 53987893 is 39878935.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52157284 + 1830609 = 7222^2 + 1353^2 .

It is a cyclic number.

It is not a de Polignac number, because 53987893 - 2⁵ = 53987861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53987893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53987803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26993946 + 26993947.

It is an arithmetic number, because the mean of its divisors is an integer number (26993947).

Almost surely, 2^53987893 is an apocalyptic number.

It is an amenable number.

53987893 is a deficient number, since it is larger than the sum of its proper divisors (1).

53987893 is an equidigital number, since it uses as much as digits as its factorization.

53987893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 52.

The square root of 53987893 is about 7347.6454051621. The cubic root of 53987893 is about 377.9480649605.

The spelling of 53987893 in words is "fifty-three million, nine hundred eighty-seven thousand, eight hundred ninety-three".