52918405 has 4 divisors (see below), whose sum is σ = 63502092. Its totient is φ = 42334720.

The previous prime is 52918391. The next prime is 52918429. The reversal of 52918405 is 50481925.

52918405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 28058209 + 24860196 = 5297^2 + 4986^2 .

It is not a de Polignac number, because 52918405 - 2⁵ = 52918373 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5291836 + ... + 5291845.

It is an arithmetic number, because the mean of its divisors is an integer number (15875523).

Almost surely, 2^52918405 is an apocalyptic number.

It is an amenable number.

52918405 is a deficient number, since it is larger than the sum of its proper divisors (10583687).

52918405 is a wasteful number, since it uses less digits than its factorization.

52918405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10583686.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 52918405 is about 7274.5037631443. The cubic root of 52918405 is about 375.4357128081.

The spelling of 52918405 in words is "fifty-two million, nine hundred eighteen thousand, four hundred five".