521034552494 has 4 divisors (see below), whose sum is σ = 781551828744. Its totient is φ = 260517276246.

The previous prime is 521034552463. The next prime is 521034552499. The reversal of 521034552494 is 494255430125.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521034552499) 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 as a sum of consecutive naturals, namely, 130258638122 + ... + 130258638125.

It is an arithmetic number, because the mean of its divisors is an integer number (195387957186).

Almost surely, 2^521034552494 is an apocalyptic number.

521034552494 is a deficient number, since it is larger than the sum of its proper divisors (260517276250).

521034552494 is a wasteful number, since it uses less digits than its factorization.

521034552494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260517276249.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 521034552494 in words is "five hundred twenty-one billion, thirty-four million, five hundred fifty-two thousand, four hundred ninety-four".