52660387 has 8 divisors (see below), whose sum is σ = 56780640. Its totient is φ = 48550080.

The previous prime is 52660379. The next prime is 52660397. The reversal of 52660387 is 78306625.

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 52660387 - 2³ = 52660379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52660367) 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, 11439 + ... + 15367.

It is an arithmetic number, because the mean of its divisors is an integer number (7097580).

Almost surely, 2^52660387 is an apocalyptic number.

52660387 is a deficient number, since it is larger than the sum of its proper divisors (4120253).

52660387 is a wasteful number, since it uses less digits than its factorization.

52660387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 52660387 is about 7256.7476874975. The cubic root of 52660387 is about 374.8245389523.

The spelling of 52660387 in words is "fifty-two million, six hundred sixty thousand, three hundred eighty-seven".