521442105 has 64 divisors (see below), whose sum is σ = 909232128. Its totient is φ = 254213120.

The previous prime is 521442083. The next prime is 521442113. The reversal of 521442105 is 501244125.

It is not a de Polignac number, because 521442105 - 2⁹ = 521441593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1502542 + ... + 1502888.

It is an arithmetic number, because the mean of its divisors is an integer number (14206752).

Almost surely, 2^521442105 is an apocalyptic number.

It is an amenable number.

521442105 is a deficient number, since it is larger than the sum of its proper divisors (387790023).

521442105 is a wasteful number, since it uses less digits than its factorization.

521442105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 521442105 is about 22835.1068532643. The cubic root of 521442105 is about 804.8878384940.

The spelling of 521442105 in words is "five hundred twenty-one million, four hundred forty-two thousand, one hundred five".