52660645 has 8 divisors (see below), whose sum is σ = 66910104. Its totient is φ = 39650304.

The previous prime is 52660637. The next prime is 52660649. The reversal of 52660645 is 54606625.

It can be written as a sum of positive squares in 4 ways, for example, as 12096484 + 40564161 = 3478^2 + 6369^2 .

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 52660645 - 2³ = 52660637 is a prime.

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 52660645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52660649) 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, 309684 + ... + 309853.

It is an arithmetic number, because the mean of its divisors is an integer number (8363763).

Almost surely, 2^52660645 is an apocalyptic number.

It is an amenable number.

52660645 is a deficient number, since it is larger than the sum of its proper divisors (14249459).

52660645 is a wasteful number, since it uses less digits than its factorization.

52660645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619559.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 52660645 is about 7256.7654640342. The cubic root of 52660645 is about 374.8251510795.

The spelling of 52660645 in words is "fifty-two million, six hundred sixty thousand, six hundred forty-five".