521141120551 has 8 divisors (see below), whose sum is σ = 548609033600. Its totient is φ = 493677150840.

The previous prime is 521141120471. The next prime is 521141120569. The reversal of 521141120551 is 155021141125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521141120551 - 2²¹ = 521139023399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521141120251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712611 + ... + 1245028.

It is an arithmetic number, because the mean of its divisors is an integer number (68576129200).

Almost surely, 2^521141120551 is an apocalyptic number.

521141120551 is a deficient number, since it is larger than the sum of its proper divisors (27467913049).

521141120551 is a wasteful number, since it uses less digits than its factorization.

521141120551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1971669.

The product of its (nonzero) digits is 2000, while the sum is 28.

Adding to 521141120551 its reverse (155021141125), we get a palindrome (676162261676).

The spelling of 521141120551 in words is "five hundred twenty-one billion, one hundred forty-one million, one hundred twenty thousand, five hundred fifty-one".