520856801 has 8 divisors (see below), whose sum is σ = 524799744. Its totient is φ = 516924000.

The previous prime is 520856797. The next prime is 520856803. The reversal of 520856801 is 108658025.

It is a happy number.

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 520856801 - 2² = 520856797 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520856803) 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, 123341 + ... + 127493.

It is an arithmetic number, because the mean of its divisors is an integer number (65599968).

Almost surely, 2^520856801 is an apocalyptic number.

It is an amenable number.

520856801 is a deficient number, since it is larger than the sum of its proper divisors (3942943).

520856801 is a wasteful number, since it uses less digits than its factorization.

520856801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5071.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 520856801 is about 22822.2873744066. The cubic root of 520856801 is about 804.5865711408.

The spelling of 520856801 in words is "five hundred twenty million, eight hundred fifty-six thousand, eight hundred one".