52120309 has 8 divisors (see below), whose sum is σ = 53644448. Its totient is φ = 50602320.

The previous prime is 52120303. The next prime is 52120339. The reversal of 52120309 is 90302125.

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 52120309 - 2³ = 52120301 is a prime.

It is a super-2 number, since 2×52120309² = 5433053220510962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52120309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52120301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19894 + ... + 22360.

It is an arithmetic number, because the mean of its divisors is an integer number (6705556).

Almost surely, 2^52120309 is an apocalyptic number.

It is an amenable number.

52120309 is a deficient number, since it is larger than the sum of its proper divisors (1524139).

52120309 is a wasteful number, since it uses less digits than its factorization.

52120309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 52120309 is about 7219.4396596966. The cubic root of 52120309 is about 373.5387495363.

The spelling of 52120309 in words is "fifty-two million, one hundred twenty thousand, three hundred nine".