521331141 has 4 divisors (see below), whose sum is σ = 695108192. Its totient is φ = 347554092.

The previous prime is 521331131. The next prime is 521331143. The reversal of 521331141 is 141133125.

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 521331141 - 2¹¹ = 521329093 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 (521331143) 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, 86888521 + ... + 86888526.

It is an arithmetic number, because the mean of its divisors is an integer number (173777048).

Almost surely, 2^521331141 is an apocalyptic number.

It is an amenable number.

521331141 is a deficient number, since it is larger than the sum of its proper divisors (173777051).

521331141 is a wasteful number, since it uses less digits than its factorization.

521331141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173777050.

The product of its digits is 360, while the sum is 21.

The square root of 521331141 is about 22832.6770440963. The cubic root of 521331141 is about 804.8307404900.

Adding to 521331141 its reverse (141133125), we get a palindrome (662464266).

The spelling of 521331141 in words is "five hundred twenty-one million, three hundred thirty-one thousand, one hundred forty-one".