521968054 has 16 divisors (see below), whose sum is σ = 791017920. Its totient is φ = 258309000.

The previous prime is 521968037. The next prime is 521968087. The reversal of 521968054 is 450869125.

It is a junction number, because it is equal to n+sod(n) for n = 521967998 and 521968016.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 78637 + ... + 85015.

It is an arithmetic number, because the mean of its divisors is an integer number (49438620).

Almost surely, 2^521968054 is an apocalyptic number.

521968054 is a deficient number, since it is larger than the sum of its proper divisors (269049866).

521968054 is a wasteful number, since it uses less digits than its factorization.

521968054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 521968054 is about 22846.6201876777. The cubic root of 521968054 is about 805.1583624248.

The spelling of 521968054 in words is "five hundred twenty-one million, nine hundred sixty-eight thousand, fifty-four".