52905405 has 64 divisors (see below), whose sum is σ = 106352640. Its totient is φ = 21897216.

The previous prime is 52905403. The next prime is 52905421. The reversal of 52905405 is 50450925.

It is a happy number.

It is not a de Polignac number, because 52905405 - 2¹ = 52905403 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52905403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45309 + ... + 46461.

It is an arithmetic number, because the mean of its divisors is an integer number (1661760).

Almost surely, 2^52905405 is an apocalyptic number.

It is an amenable number.

52905405 is an abundant number, since it is smaller than the sum of its proper divisors (53447235).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52905405 is a wasteful number, since it uses less digits than its factorization.

52905405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 52905405 is about 7273.6101765217. The cubic root of 52905405 is about 375.4049669584.

The spelling of 52905405 in words is "fifty-two million, nine hundred five thousand, four hundred five".