52666649 has 8 divisors (see below), whose sum is σ = 61471488. Its totient is φ = 44182080.

The previous prime is 52666637. The next prime is 52666667. The reversal of 52666649 is 94666625.

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 52666649 - 2¹² = 52662553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52666609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79712 + ... + 80369.

It is an arithmetic number, because the mean of its divisors is an integer number (7683936).

Almost surely, 2^52666649 is an apocalyptic number.

It is an amenable number.

52666649 is a deficient number, since it is larger than the sum of its proper divisors (8804839).

52666649 is a wasteful number, since it uses less digits than its factorization.

52666649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160135.

The product of its digits is 466560, while the sum is 44.

The square root of 52666649 is about 7257.1791351737. The cubic root of 52666649 is about 374.8393955227.

The spelling of 52666649 in words is "fifty-two million, six hundred sixty-six thousand, six hundred forty-nine".