521252103 has 8 divisors (see below), whose sum is σ = 695270016. Its totient is φ = 347367800.

The previous prime is 521252087. The next prime is 521252107. The reversal of 521252103 is 301252125.

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 521252103 - 2⁴ = 521252087 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 521252103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521252107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23913 + ... + 40178.

It is an arithmetic number, because the mean of its divisors is an integer number (86908752).

Almost surely, 2^521252103 is an apocalyptic number.

521252103 is a deficient number, since it is larger than the sum of its proper divisors (174017913).

521252103 is a wasteful number, since it uses less digits than its factorization.

521252103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66805.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 521252103 is about 22830.9461696181. The cubic root of 521252103 is about 804.7900654934.

The spelling of 521252103 in words is "five hundred twenty-one million, two hundred fifty-two thousand, one hundred three".