521061323 has 4 divisors (see below), whose sum is σ = 526220448. Its totient is φ = 515902200.

The previous prime is 521061319. The next prime is 521061341. The reversal of 521061323 is 323160125.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 521061323 - 2² = 521061319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521061313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2579411 + ... + 2579612.

It is an arithmetic number, because the mean of its divisors is an integer number (131555112).

Almost surely, 2^521061323 is an apocalyptic number.

521061323 is a deficient number, since it is larger than the sum of its proper divisors (5159125).

521061323 is a wasteful number, since it uses less digits than its factorization.

521061323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159124.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 521061323 is about 22826.7676862056. The cubic root of 521061323 is about 804.6918682338.

The spelling of 521061323 in words is "five hundred twenty-one million, sixty-one thousand, three hundred twenty-three".