521425412 has 12 divisors (see below), whose sum is σ = 913072860. Its totient is φ = 260547456.

The previous prime is 521425403. The next prime is 521425441. The reversal of 521425412 is 214524125.

It can be written as a sum of positive squares in 2 ways, for example, as 511031236 + 10394176 = 22606^2 + 3224^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34073 + ... + 46944.

It is an arithmetic number, because the mean of its divisors is an integer number (76089405).

Almost surely, 2^521425412 is an apocalyptic number.

It is an amenable number.

521425412 is a deficient number, since it is larger than the sum of its proper divisors (391647448).

521425412 is a wasteful number, since it uses less digits than its factorization.

521425412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82630 (or 82628 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 521425412 is about 22834.7413385832. The cubic root of 521425412 is about 804.8792494062.

Adding to 521425412 its reverse (214524125), we get a palindrome (735949537).

The spelling of 521425412 in words is "five hundred twenty-one million, four hundred twenty-five thousand, four hundred twelve".