521154232041 has 4 divisors (see below), whose sum is σ = 694872309392. Its totient is φ = 347436154692.

The previous prime is 521154232031. The next prime is 521154232097. The reversal of 521154232041 is 140232451125.

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 not a de Polignac number, because 521154232041 - 2⁹ = 521154231529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521154232031) 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, 86859038671 + ... + 86859038676.

It is an arithmetic number, because the mean of its divisors is an integer number (173718077348).

Almost surely, 2^521154232041 is an apocalyptic number.

It is an amenable number.

521154232041 is a deficient number, since it is larger than the sum of its proper divisors (173718077351).

521154232041 is a wasteful number, since it uses less digits than its factorization.

521154232041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173718077350.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 521154232041 its reverse (140232451125), we get a palindrome (661386683166).

The spelling of 521154232041 in words is "five hundred twenty-one billion, one hundred fifty-four million, two hundred thirty-two thousand, forty-one".