541512121 has 4 divisors (see below), whose sum is σ = 541983744. Its totient is φ = 541040500.

The previous prime is 541512079. The next prime is 541512137. The reversal of 541512121 is 121215145.

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 541512121 - 2¹³ = 541503929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 541512092 and 541512101.

It is not an unprimeable number, because it can be changed into a prime (541512151) 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, 234085 + ... + 236386.

It is an arithmetic number, because the mean of its divisors is an integer number (135495936).

Almost surely, 2^541512121 is an apocalyptic number.

It is an amenable number.

541512121 is a deficient number, since it is larger than the sum of its proper divisors (471623).

541512121 is a wasteful number, since it uses less digits than its factorization.

541512121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471622.

The product of its digits is 400, while the sum is 22.

The square root of 541512121 is about 23270.4129959053. The cubic root of 541512121 is about 815.0846743545.

Adding to 541512121 its reverse (121215145), we get a palindrome (662727266).

The spelling of 541512121 in words is "five hundred forty-one million, five hundred twelve thousand, one hundred twenty-one".