521150423 has 4 divisors (see below), whose sum is σ = 521509080. Its totient is φ = 520791768.

The previous prime is 521150417. The next prime is 521150477. The reversal of 521150423 is 324051125.

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 521150423 - 2⁴ = 521150407 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 (521158423) 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, 177140 + ... + 180057.

It is an arithmetic number, because the mean of its divisors is an integer number (130377270).

Almost surely, 2^521150423 is an apocalyptic number.

521150423 is a deficient number, since it is larger than the sum of its proper divisors (358657).

521150423 is a wasteful number, since it uses less digits than its factorization.

521150423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358656.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 521150423 is about 22828.7192588634. The cubic root of 521150423 is about 804.7377322911.

The spelling of 521150423 in words is "five hundred twenty-one million, one hundred fifty thousand, four hundred twenty-three".