52007121 has 12 divisors (see below), whose sum is σ = 77712180. Its totient is φ = 33475680.

The previous prime is 52007113. The next prime is 52007149. The reversal of 52007121 is 12170025.

It can be written as a sum of positive squares in 2 ways, for example, as 9235521 + 42771600 = 3039^2 + 6540^2 .

It is not a de Polignac number, because 52007121 - 2³ = 52007113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52007094 and 52007103.

It is not an unprimeable number, because it can be changed into a prime (52007101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99370 + ... + 99891.

It is an arithmetic number, because the mean of its divisors is an integer number (6476015).

Almost surely, 2^52007121 is an apocalyptic number.

It is an amenable number.

52007121 is a deficient number, since it is larger than the sum of its proper divisors (25705059).

52007121 is a wasteful number, since it uses less digits than its factorization.

52007121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199296 (or 199293 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 52007121 is about 7211.5962865374. The cubic root of 52007121 is about 373.2681528604.

Adding to 52007121 its reverse (12170025), we get a palindrome (64177146).

It can be divided in two parts, 5200 and 7121, that added together give a palindrome (12321).

The spelling of 52007121 in words is "fifty-two million, seven thousand, one hundred twenty-one".