53985005 has 16 divisors (see below), whose sum is σ = 66690864. Its totient is φ = 41932800.

The previous prime is 53984993. The next prime is 53985017. The reversal of 53985005 is 50058935.

It is an interprime number because it is at equal distance from previous prime (53984993) and next prime (53985017).

It can be written as a sum of positive squares in 8 ways, for example, as 13675204 + 40309801 = 3698^2 + 6349^2 .

It is not a de Polignac number, because 53985005 - 2¹⁰ = 53983981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25757 + ... + 27773.

It is an arithmetic number, because the mean of its divisors is an integer number (4168179).

Almost surely, 2^53985005 is an apocalyptic number.

It is an amenable number.

53985005 is a deficient number, since it is larger than the sum of its proper divisors (12705859).

53985005 is a wasteful number, since it uses less digits than its factorization.

53985005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 53985005 is about 7347.4488769913. The cubic root of 53985005 is about 377.9413255886.

The spelling of 53985005 in words is "fifty-three million, nine hundred eighty-five thousand, five".