520216351 has 8 divisors (see below), whose sum is σ = 531875520. Its totient is φ = 508581888.

The previous prime is 520216349. The next prime is 520216373. The reversal of 520216351 is 153612025.

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

It is a cyclic number.

It is not a de Polignac number, because 520216351 - 2¹ = 520216349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520216331) 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, 40255 + ... + 51583.

It is an arithmetic number, because the mean of its divisors is an integer number (66484440).

Almost surely, 2^520216351 is an apocalyptic number.

520216351 is a deficient number, since it is larger than the sum of its proper divisors (11659169).

520216351 is a wasteful number, since it uses less digits than its factorization.

520216351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12353.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 520216351 is about 22808.2518181469. The cubic root of 520216351 is about 804.2566603620.

Adding to 520216351 its reverse (153612025), we get a palindrome (673828376).

The spelling of 520216351 in words is "five hundred twenty million, two hundred sixteen thousand, three hundred fifty-one".