520150665 has 16 divisors (see below), whose sum is σ = 834130368. Its totient is φ = 276783936.

The previous prime is 520150651. The next prime is 520150691. The reversal of 520150665 is 566051025.

It is not a de Polignac number, because 520150665 - 2⁶ = 520150601 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32494 + ... + 45783.

It is an arithmetic number, because the mean of its divisors is an integer number (52133148).

Almost surely, 2^520150665 is an apocalyptic number.

It is an amenable number.

520150665 is a deficient number, since it is larger than the sum of its proper divisors (313979703).

520150665 is a wasteful number, since it uses less digits than its factorization.

520150665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78728.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 520150665 is about 22806.8118113865. The cubic root of 520150665 is about 804.2228086600. Note that the first 3 decimals are identical.

The spelling of 520150665 in words is "five hundred twenty million, one hundred fifty thousand, six hundred sixty-five".