52405065 has 12 divisors (see below), whose sum is σ = 90835524. Its totient is φ = 27949344.

The previous prime is 52405049. The next prime is 52405079. The reversal of 52405065 is 56050425.

It can be written as a sum of positive squares in 2 ways, for example, as 20358144 + 32046921 = 4512^2 + 5661^2 .

It is not a de Polignac number, because 52405065 - 2⁴ = 52405049 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 582234 + ... + 582323.

It is an arithmetic number, because the mean of its divisors is an integer number (7569627).

Almost surely, 2^52405065 is an apocalyptic number.

It is an amenable number.

52405065 is a deficient number, since it is larger than the sum of its proper divisors (38430459).

52405065 is a wasteful number, since it uses less digits than its factorization.

52405065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164568 (or 1164565 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 52405065 is about 7239.1342714443. The cubic root of 52405065 is about 374.2177828313.

The spelling of 52405065 in words is "fifty-two million, four hundred five thousand, sixty-five".