520165045 has 8 divisors (see below), whose sum is σ = 624327840. Its totient is φ = 416045520.

The previous prime is 520165013. The next prime is 520165057. The reversal of 520165045 is 540561025.

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

It is not a de Polignac number, because 520165045 - 2⁵ = 520165013 is a prime.

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, 28890 + ... + 43300.

It is an arithmetic number, because the mean of its divisors is an integer number (78040980).

Almost surely, 2^520165045 is an apocalyptic number.

It is an amenable number.

520165045 is a deficient number, since it is larger than the sum of its proper divisors (104162795).

520165045 is a wasteful number, since it uses less digits than its factorization.

520165045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21635.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 520165045 is about 22807.1270658976. The cubic root of 520165045 is about 804.2302197290.

The spelling of 520165045 in words is "five hundred twenty million, one hundred sixty-five thousand, forty-five".