2520120165 has 16 divisors (see below), whose sum is σ = 4037817600. Its totient is φ = 1342188992.

The previous prime is 2520120121. The next prime is 2520120191. The reversal of 2520120165 is 5610210252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2520120165 - 2¹⁰ = 2520119141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106050 + ... + 127619.

It is an arithmetic number, because the mean of its divisors is an integer number (252363600).

Almost surely, 2^2520120165 is an apocalyptic number.

It is an amenable number.

2520120165 is a deficient number, since it is larger than the sum of its proper divisors (1517697435).

2520120165 is a wasteful number, since it uses less digits than its factorization.

2520120165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234396.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2520120165 is about 50200.7984498255. The cubic root of 2520120165 is about 1360.8400528397.

The spelling of 2520120165 in words is "two billion, five hundred twenty million, one hundred twenty thousand, one hundred sixty-five".