52207121 has 4 divisors (see below), whose sum is σ = 52224000. Its totient is φ = 52190244.

The previous prime is 52207093. The next prime is 52207139. The reversal of 52207121 is 12170225.

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 52207121 - 2¹⁰ = 52206097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52207093 and 52207102.

It is not an unprimeable number, because it can be changed into a prime (52207151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2321 + ... + 10478.

It is an arithmetic number, because the mean of its divisors is an integer number (13056000).

Almost surely, 2^52207121 is an apocalyptic number.

It is an amenable number.

52207121 is a deficient number, since it is larger than the sum of its proper divisors (16879).

52207121 is a wasteful number, since it uses less digits than its factorization.

52207121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16878.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 52207121 is about 7225.4495361880. The cubic root of 52207121 is about 373.7460242005.

Adding to 52207121 its reverse (12170225), we get a palindrome (64377346).

The spelling of 52207121 in words is "fifty-two million, two hundred seven thousand, one hundred twenty-one".