521244130 has 16 divisors (see below), whose sum is σ = 1023534144. Its totient is φ = 189543280.

The previous prime is 521244107. The next prime is 521244131. The reversal of 521244130 is 31442125.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (521244131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2369182 + ... + 2369401.

It is an arithmetic number, because the mean of its divisors is an integer number (63970884).

Almost surely, 2^521244130 is an apocalyptic number.

521244130 is a deficient number, since it is larger than the sum of its proper divisors (502290014).

521244130 is a wasteful number, since it uses less digits than its factorization.

521244130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738601.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 521244130 is about 22830.7715594546. The cubic root of 521244130 is about 804.7859621534.

Adding to 521244130 its reverse (31442125), we get a palindrome (552686255).

The spelling of 521244130 in words is "five hundred twenty-one million, two hundred forty-four thousand, one hundred thirty".