52608721 has 8 divisors (see below), whose sum is σ = 57465504. Its totient is φ = 47764320.

The previous prime is 52608719. The next prime is 52608763. The reversal of 52608721 is 12780625.

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 52608721 - 2¹ = 52608719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52608821) 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, 7341 + ... + 12613.

It is an arithmetic number, because the mean of its divisors is an integer number (7183188).

Almost surely, 2^52608721 is an apocalyptic number.

It is an amenable number.

52608721 is a deficient number, since it is larger than the sum of its proper divisors (4856783).

52608721 is a wasteful number, since it uses less digits than its factorization.

52608721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6191.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 52608721 is about 7253.1869547117. The cubic root of 52608721 is about 374.7019166010.

The spelling of 52608721 in words is "fifty-two million, six hundred eight thousand, seven hundred twenty-one".