523016121 has 8 divisors (see below), whose sum is σ = 697702720. Its totient is φ = 348503472.

The previous prime is 523016119. The next prime is 523016147. The reversal of 523016121 is 121610325.

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

It is not a de Polignac number, because 523016121 - 2¹ = 523016119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (523016161) 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, 36301 + ... + 48618.

It is an arithmetic number, because the mean of its divisors is an integer number (87212840).

Almost surely, 2^523016121 is an apocalyptic number.

It is an amenable number.

523016121 is a deficient number, since it is larger than the sum of its proper divisors (174686599).

523016121 is a wasteful number, since it uses less digits than its factorization.

523016121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86975.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 523016121 is about 22869.5457103984. The cubic root of 523016121 is about 805.6968984092.

Adding to 523016121 its reverse (121610325), we get a palindrome (644626446).

The spelling of 523016121 in words is "five hundred twenty-three million, sixteen thousand, one hundred twenty-one".