521033434 has 8 divisors (see below), whose sum is σ = 782156628. Its totient is φ = 260314560.

The previous prime is 521033423. The next prime is 521033437. The reversal of 521033434 is 434330125.

It can be written as a sum of positive squares in 2 ways, for example, as 462465025 + 58568409 = 21505^2 + 7653^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 521033399 and 521033408.

It is not an unprimeable number, because it can be changed into a prime (521033437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97837 + ... + 103024.

Almost surely, 2^521033434 is an apocalyptic number.

521033434 is a deficient number, since it is larger than the sum of its proper divisors (261123194).

521033434 is a wasteful number, since it uses less digits than its factorization.

521033434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202160.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 521033434 is about 22826.1567943445. The cubic root of 521033434 is about 804.6775113492.

Adding to 521033434 its reverse (434330125), we get a palindrome (955363559).

The spelling of 521033434 in words is "five hundred twenty-one million, thirty-three thousand, four hundred thirty-four".