52492409 has 4 divisors (see below), whose sum is σ = 52532340. Its totient is φ = 52452480.

The previous prime is 52492397. The next prime is 52492411. The reversal of 52492409 is 90429425.

52492409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 21132409 + 31360000 = 4597^2 + 5600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52492409 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52492439) 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 3 ways as a sum of consecutive naturals, for example, 17924 + ... + 20645.

It is an arithmetic number, because the mean of its divisors is an integer number (13133085).

Almost surely, 2^52492409 is an apocalyptic number.

It is an amenable number.

52492409 is a deficient number, since it is larger than the sum of its proper divisors (39931).

52492409 is a wasteful number, since it uses less digits than its factorization.

52492409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39930.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 52492409 is about 7245.1645253921. The cubic root of 52492409 is about 374.4255714973.

The spelling of 52492409 in words is "fifty-two million, four hundred ninety-two thousand, four hundred nine".