520381121 has 8 divisors (see below), whose sum is σ = 569909760. Its totient is φ = 472209552.

The previous prime is 520381117. The next prime is 520381123. The reversal of 520381121 is 121183025.

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 520381121 - 2² = 520381117 is a prime.

It is a super-2 number, since 2×520381121² = 541593022186433282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520381123) 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, 338465 + ... + 339998.

It is an arithmetic number, because the mean of its divisors is an integer number (71238720).

Almost surely, 2^520381121 is an apocalyptic number.

It is an amenable number.

520381121 is a deficient number, since it is larger than the sum of its proper divisors (49528639).

520381121 is a wasteful number, since it uses less digits than its factorization.

520381121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678535.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 520381121 is about 22811.8636020821. The cubic root of 520381121 is about 804.3415631025.

The spelling of 520381121 in words is "five hundred twenty million, three hundred eighty-one thousand, one hundred twenty-one".