520606121 has 8 divisors (see below), whose sum is σ = 606204864. Its totient is φ = 437814000.

The previous prime is 520606111. The next prime is 520606139. The reversal of 520606121 is 121606025.

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 520606121 - 2²² = 516411817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520606111) 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, 701255 + ... + 701996.

It is an arithmetic number, because the mean of its divisors is an integer number (75775608).

Almost surely, 2^520606121 is an apocalyptic number.

It is an amenable number.

520606121 is a deficient number, since it is larger than the sum of its proper divisors (85598743).

520606121 is a wasteful number, since it uses less digits than its factorization.

520606121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1403311.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 520606121 is about 22816.7947135438. The cubic root of 520606121 is about 804.4574722361.

The spelling of 520606121 in words is "five hundred twenty million, six hundred six thousand, one hundred twenty-one".