521520130 has 32 divisors (see below), whose sum is σ = 975057408. Its totient is φ = 200620800.

The previous prime is 521520127. The next prime is 521520163. The reversal of 521520130 is 31025125.

It is a junction number, because it is equal to n+sod(n) for n = 521520098 and 521520107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45370 + ... + 55690.

It is an arithmetic number, because the mean of its divisors is an integer number (30470544).

Almost surely, 2^521520130 is an apocalyptic number.

521520130 is a deficient number, since it is larger than the sum of its proper divisors (453537278).

521520130 is a wasteful number, since it uses less digits than its factorization.

521520130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10522.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 521520130 is about 22836.8152333026. The cubic root of 521520130 is about 804.9279824466.

Adding to 521520130 its reverse (31025125), we get a palindrome (552545255).

The spelling of 521520130 in words is "five hundred twenty-one million, five hundred twenty thousand, one hundred thirty".