52405805 has 4 divisors (see below), whose sum is σ = 62886972. Its totient is φ = 41924640.

The previous prime is 52405757. The next prime is 52405807. The reversal of 52405805 is 50850425.

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 17960644 + 34445161 = 4238^2 + 5869^2 .

It is not a de Polignac number, because 52405805 - 2⁶ = 52405741 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52405807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5240576 + ... + 5240585.

It is an arithmetic number, because the mean of its divisors is an integer number (15721743).

Almost surely, 2^52405805 is an apocalyptic number.

It is an amenable number.

52405805 is a deficient number, since it is larger than the sum of its proper divisors (10481167).

52405805 is a wasteful number, since it uses less digits than its factorization.

52405805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10481166.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 52405805 is about 7239.1853823479. The cubic root of 52405805 is about 374.2195442377.

The spelling of 52405805 in words is "fifty-two million, four hundred five thousand, eight hundred five".