521427272 has 16 divisors (see below), whose sum is σ = 979333740. Its totient is φ = 260271616.

The previous prime is 521427271. The next prime is 521427341. The reversal of 521427272 is 272724125.

It can be written as a sum of positive squares in 2 ways, for example, as 520478596 + 948676 = 22814^2 + 974^2 .

It is not an unprimeable number, because it can be changed into a prime (521427271) 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, 50213 + ... + 59700.

Almost surely, 2^521427272 is an apocalyptic number.

It is an amenable number.

521427272 is a deficient number, since it is larger than the sum of its proper divisors (457906468).

521427272 is a wasteful number, since it uses less digits than its factorization.

521427272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110512 (or 110508 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 521427272 is about 22834.7820659624. The cubic root of 521427272 is about 804.8802064454.

The spelling of 521427272 in words is "five hundred twenty-one million, four hundred twenty-seven thousand, two hundred seventy-two".