53178065 has 8 divisors (see below), whose sum is σ = 65538600. Its totient is φ = 41392512.

The previous prime is 53178053. The next prime is 53178067. The reversal of 53178065 is 56087135.

It can be written as a sum of positive squares in 4 ways, for example, as 2383936 + 50794129 = 1544^2 + 7127^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53178065 - 2⁴ = 53178049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53178067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143540 + ... + 143909.

It is an arithmetic number, because the mean of its divisors is an integer number (8192325).

Almost surely, 2^53178065 is an apocalyptic number.

It is an amenable number.

53178065 is a deficient number, since it is larger than the sum of its proper divisors (12360535).

53178065 is a wasteful number, since it uses less digits than its factorization.

53178065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287491.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 53178065 is about 7292.3291889492. The cubic root of 53178065 is about 376.0487737582.

The spelling of 53178065 in words is "fifty-three million, one hundred seventy-eight thousand, sixty-five".