5241215121 has 4 divisors (see below), whose sum is σ = 6988286832. Its totient is φ = 3494143412.

The previous prime is 5241215117. The next prime is 5241215123. The reversal of 5241215121 is 1215121425.

It is a happy number.

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 5241215121 - 2² = 5241215117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5241215091 and 5241215100.

It is not an unprimeable number, because it can be changed into a prime (5241215123) 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, 873535851 + ... + 873535856.

It is an arithmetic number, because the mean of its divisors is an integer number (1747071708).

Almost surely, 2^5241215121 is an apocalyptic number.

It is an amenable number.

5241215121 is a deficient number, since it is larger than the sum of its proper divisors (1747071711).

5241215121 is a wasteful number, since it uses less digits than its factorization.

5241215121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747071710.

The product of its digits is 800, while the sum is 24.

The square root of 5241215121 is about 72396.2369256856. The cubic root of 5241215121 is about 1737.0433693747.

Adding to 5241215121 its reverse (1215121425), we get a palindrome (6456336546).

The spelling of 5241215121 in words is "five billion, two hundred forty-one million, two hundred fifteen thousand, one hundred twenty-one".