521772223034 has 4 divisors (see below), whose sum is σ = 782658334554. Its totient is φ = 260886111516.

The previous prime is 521772223003. The next prime is 521772223099. The reversal of 521772223034 is 430322277125.

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

It can be written as a sum of positive squares in only one way, i.e., 324461248225 + 197310974809 = 569615^2 + 444197^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130443055757 + ... + 130443055760.

Almost surely, 2^521772223034 is an apocalyptic number.

521772223034 is a deficient number, since it is larger than the sum of its proper divisors (260886111520).

521772223034 is a wasteful number, since it uses less digits than its factorization.

521772223034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260886111519.

The product of its (nonzero) digits is 141120, while the sum is 38.

The spelling of 521772223034 in words is "five hundred twenty-one billion, seven hundred seventy-two million, two hundred twenty-three thousand, thirty-four".