520350445 has 8 divisors (see below), whose sum is σ = 625249944. Its totient is φ = 415727424.

The previous prime is 520350431. The next prime is 520350491. The reversal of 520350445 is 544053025.

It can be written as a sum of positive squares in 4 ways, for example, as 52969284 + 467381161 = 7278^2 + 21619^2 .

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 520350445 - 2²¹ = 518253293 is a prime.

It is a super-2 number, since 2×520350445² = 541529171223396050, which contains 22 as substring.

It is a Duffinian 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, 64954 + ... + 72523.

It is an arithmetic number, because the mean of its divisors is an integer number (78156243).

Almost surely, 2^520350445 is an apocalyptic number.

It is an amenable number.

520350445 is a deficient number, since it is larger than the sum of its proper divisors (104899499).

520350445 is a wasteful number, since it uses less digits than its factorization.

520350445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138239.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 520350445 is about 22811.1912227310. The cubic root of 520350445 is about 804.3257577208.

The spelling of 520350445 in words is "five hundred twenty million, three hundred fifty thousand, four hundred forty-five".