52078865 has 4 divisors (see below), whose sum is σ = 62494644. Its totient is φ = 41663088.

The previous prime is 52078841. The next prime is 52078879. The reversal of 52078865 is 56887025.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7349521 + 44729344 = 2711^2 + 6688^2 .

It is a cyclic number.

It is not a de Polignac number, because 52078865 - 2¹⁴ = 52062481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5207882 + ... + 5207891.

It is an arithmetic number, because the mean of its divisors is an integer number (15623661).

Almost surely, 2^52078865 is an apocalyptic number.

It is an amenable number.

52078865 is a deficient number, since it is larger than the sum of its proper divisors (10415779).

52078865 is a wasteful number, since it uses less digits than its factorization.

52078865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10415778.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 52078865 is about 7216.5687830159. The cubic root of 52078865 is about 373.4397155556.

The spelling of 52078865 in words is "fifty-two million, seventy-eight thousand, eight hundred sixty-five".