520222445 has 8 divisors (see below), whose sum is σ = 645793560. Its totient is φ = 401826880.

The previous prime is 520222397. The next prime is 520222453. The reversal of 520222445 is 544222025.

It can be written as a sum of positive squares in 4 ways, for example, as 57714409 + 462508036 = 7597^2 + 21506^2 .

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

It is not a de Polignac number, because 520222445 - 2¹⁴ = 520206061 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1793726 + ... + 1794015.

It is an arithmetic number, because the mean of its divisors is an integer number (80724195).

Almost surely, 2^520222445 is an apocalyptic number.

It is an amenable number.

520222445 is a deficient number, since it is larger than the sum of its proper divisors (125571115).

520222445 is a wasteful number, since it uses less digits than its factorization.

520222445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587775.

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 520222445 is about 22808.3854097566. The cubic root of 520222445 is about 804.2598007996.

The spelling of 520222445 in words is "five hundred twenty million, two hundred twenty-two thousand, four hundred forty-five".