52398405 has 12 divisors (see below), whose sum is σ = 90823980. Its totient is φ = 27945792.

The previous prime is 52398377. The next prime is 52398407. The reversal of 52398405 is 50489325.

52398405 is a `hidden beast` number, since 523 + 98 + 40 + 5 = 666.

52398405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14243076 + 38155329 = 3774^2 + 6177^2 .

It is not a de Polignac number, because 52398405 - 2⁶ = 52398341 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 52398405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52398407) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 582160 + ... + 582249.

It is an arithmetic number, because the mean of its divisors is an integer number (7568665).

Almost surely, 2^52398405 is an apocalyptic number.

It is an amenable number.

52398405 is a deficient number, since it is larger than the sum of its proper divisors (38425575).

52398405 is a wasteful number, since it uses less digits than its factorization.

52398405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164420 (or 1164417 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 52398405 is about 7238.6742570722. The cubic root of 52398405 is about 374.2019294272.

The spelling of 52398405 in words is "fifty-two million, three hundred ninety-eight thousand, four hundred five".