521234044 has 6 divisors (see below), whose sum is σ = 912159584. Its totient is φ = 260617020.

The previous prime is 521233987. The next prime is 521234047. The reversal of 521234044 is 440432125.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521234047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65154252 + ... + 65154259.

Almost surely, 2^521234044 is an apocalyptic number.

It is an amenable number.

521234044 is a deficient number, since it is larger than the sum of its proper divisors (390925540).

521234044 is a wasteful number, since it uses less digits than its factorization.

521234044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130308515 (or 130308513 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 521234044 is about 22830.5506722900. The cubic root of 521234044 is about 804.7807712885.

Adding to 521234044 its reverse (440432125), we get a palindrome (961666169).

The spelling of 521234044 in words is "five hundred twenty-one million, two hundred thirty-four thousand, forty-four".