52405121 has 4 divisors (see below), whose sum is σ = 53036592. Its totient is φ = 51773652.

The previous prime is 52405099. The next prime is 52405147. The reversal of 52405121 is 12150425.

52405121 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52405121 - 2¹⁸ = 52142977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52405093 and 52405102.

It is not an unprimeable number, because it can be changed into a prime (52405151) 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, 315611 + ... + 315776.

It is an arithmetic number, because the mean of its divisors is an integer number (13259148).

Almost surely, 2^52405121 is an apocalyptic number.

It is an amenable number.

52405121 is a deficient number, since it is larger than the sum of its proper divisors (631471).

52405121 is an equidigital number, since it uses as much as digits as its factorization.

52405121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631470.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 52405121 is about 7239.1381393091. The cubic root of 52405121 is about 374.2179161275.

Adding to 52405121 its reverse (12150425), we get a palindrome (64555546).

The spelling of 52405121 in words is "fifty-two million, four hundred five thousand, one hundred twenty-one".