52066669 has 8 divisors (see below), whose sum is σ = 54966080. Its totient is φ = 49319820.

The previous prime is 52066667. The next prime is 52066681. The reversal of 52066669 is 96666025.

It is not a de Polignac number, because 52066669 - 2¹ = 52066667 is a prime.

It is a super-2 number, since 2×52066669² = 5421876041511122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52066661) 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, 3064 + ... + 10654.

It is an arithmetic number, because the mean of its divisors is an integer number (6870760).

Almost surely, 2^52066669 is an apocalyptic number.

It is an amenable number.

52066669 is a deficient number, since it is larger than the sum of its proper divisors (2899411).

52066669 is an frugal number, since it uses more digits than its factorization.

52066669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648 (or 7610 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 52066669 is about 7215.7237336251. The cubic root of 52066669 is about 373.4105621658.

The spelling of 52066669 in words is "fifty-two million, sixty-six thousand, six hundred sixty-nine".