521106055 has 8 divisors (see below), whose sum is σ = 652515552. Its totient is φ = 398759328.

The previous prime is 521105987. The next prime is 521106073. The reversal of 521106055 is 550601125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 521106055 - 2¹⁹ = 520581767 is a prime.

It is a Duffinian number.

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, 2265564 + ... + 2265793.

It is an arithmetic number, because the mean of its divisors is an integer number (81564444).

Almost surely, 2^521106055 is an apocalyptic number.

521106055 is a deficient number, since it is larger than the sum of its proper divisors (131409497).

521106055 is a wasteful number, since it uses less digits than its factorization.

521106055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531385.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 521106055 is about 22827.7474797668. The cubic root of 521106055 is about 804.7148946001.

The spelling of 521106055 in words is "five hundred twenty-one million, one hundred six thousand, fifty-five".