52908405 has 16 divisors (see below), whose sum is σ = 92349504. Its totient is φ = 25652480.

The previous prime is 52908377. The next prime is 52908451. The reversal of 52908405 is 50480925.

It is not a de Polignac number, because 52908405 - 2¹⁸ = 52646261 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160164 + ... + 160493.

It is an arithmetic number, because the mean of its divisors is an integer number (5771844).

Almost surely, 2^52908405 is an apocalyptic number.

52908405 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

52908405 is a deficient number, since it is larger than the sum of its proper divisors (39441099).

52908405 is a wasteful number, since it uses less digits than its factorization.

52908405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320676.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 52908405 is about 7273.8163985627. The cubic root of 52908405 is about 375.4120626015.

It can be divided in two parts, 5290 and 8405, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 52908405 in words is "fifty-two million, nine hundred eight thousand, four hundred five".