521081201 has 8 divisors (see below), whose sum is σ = 540309504. Its totient is φ = 502004160.

The previous prime is 521081173. The next prime is 521081203. The reversal of 521081201 is 102180125.

It is a happy number.

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 521081201 - 2²² = 516886897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521081203) 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, 30776 + ... + 44601.

It is an arithmetic number, because the mean of its divisors is an integer number (67538688).

Almost surely, 2^521081201 is an apocalyptic number.

It is an amenable number.

521081201 is a deficient number, since it is larger than the sum of its proper divisors (19228303).

521081201 is a wasteful number, since it uses less digits than its factorization.

521081201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75631.

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 521081201 is about 22827.2030919252. The cubic root of 521081201 is about 804.7021008500.

The spelling of 521081201 in words is "five hundred twenty-one million, eighty-one thousand, two hundred one".