52000405 has 8 divisors (see below), whose sum is σ = 62856792. Its totient is φ = 41296128.

The previous prime is 52000391. The next prime is 52000409. The reversal of 52000405 is 50400025.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12348196 + 39652209 = 3514^2 + 6297^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52000405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52000409) 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, 37272 + ... + 38641.

It is an arithmetic number, because the mean of its divisors is an integer number (7857099).

Almost surely, 2^52000405 is an apocalyptic number.

It is an amenable number.

52000405 is a deficient number, since it is larger than the sum of its proper divisors (10856387).

52000405 is a wasteful number, since it uses less digits than its factorization.

52000405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76055.

The product of its (nonzero) digits is 200, while the sum is 16.

The square root of 52000405 is about 7211.1306325707. The cubic root of 52000405 is about 373.2520846965.

The spelling of 52000405 in words is "fifty-two million, four hundred five", and thus it is an aban number.