52109661 has 16 divisors (see below), whose sum is σ = 70538048. Its totient is φ = 34214400.

The previous prime is 52109627. The next prime is 52109671. The reversal of 52109661 is 16690125.

52109661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52109661 - 2⁶ = 52109597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52109671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96051 + ... + 96591.

It is an arithmetic number, because the mean of its divisors is an integer number (4408628).

Almost surely, 2^52109661 is an apocalyptic number.

It is an amenable number.

52109661 is a deficient number, since it is larger than the sum of its proper divisors (18428387).

52109661 is a wasteful number, since it uses less digits than its factorization.

52109661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 52109661 is about 7218.7021686727. The cubic root of 52109661 is about 373.5133102429.

Adding to 52109661 its reverse (16690125), we get a palindrome (68799786).

The spelling of 52109661 in words is "fifty-two million, one hundred nine thousand, six hundred sixty-one".