52121121 has 24 divisors (see below), whose sum is σ = 75753216. Its totient is φ = 31861440.

The previous prime is 52121093. The next prime is 52121141. The reversal of 52121121 is 12112125.

It is not a de Polignac number, because 52121121 - 2⁷ = 52120993 is a prime.

It is a super-2 number, since 2×52121121² = 5433222508593282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52121121.

It is not an unprimeable number, because it can be changed into a prime (52121141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112831 + ... + 113291.

It is an arithmetic number, because the mean of its divisors is an integer number (3156384).

Almost surely, 2^52121121 is an apocalyptic number.

It is an amenable number.

52121121 is a deficient number, since it is larger than the sum of its proper divisors (23632095).

52121121 is a wasteful number, since it uses less digits than its factorization.

52121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713 (or 700 counting only the distinct ones).

The product of its digits is 40, while the sum is 15.

The square root of 52121121 is about 7219.4958965291. The cubic root of 52121121 is about 373.5406893552.

Adding to 52121121 its reverse (12112125), we get a palindrome (64233246).

The spelling of 52121121 in words is "fifty-two million, one hundred twenty-one thousand, one hundred twenty-one".