521085130 has 32 divisors (see below), whose sum is σ = 954504576. Its totient is φ = 204773184.

The previous prime is 521085101. The next prime is 521085133. The reversal of 521085130 is 31580125.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 521085095 and 521085104.

It is not an unprimeable number, because it can be changed into a prime (521085133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325492 + ... + 327088.

It is an arithmetic number, because the mean of its divisors is an integer number (29828268).

Almost surely, 2^521085130 is an apocalyptic number.

521085130 is a deficient number, since it is larger than the sum of its proper divisors (433419446).

521085130 is a wasteful number, since it uses less digits than its factorization.

521085130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 521085130 is about 22827.2891513644. The cubic root of 521085130 is about 804.7041233541.

The spelling of 521085130 in words is "five hundred twenty-one million, eighty-five thousand, one hundred thirty".