52651985 has 16 divisors (see below), whose sum is σ = 64800000. Its totient is φ = 41051136.

The previous prime is 52651961. The next prime is 52652003. The reversal of 52651985 is 58915625.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52651985 is a prime.

Its product of digits (108000) is a multiple of the sum of its prime divisors (1000).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105266 + ... + 105764.

It is an arithmetic number, because the mean of its divisors is an integer number (4050000).

Almost surely, 2^52651985 is an apocalyptic number.

It is an amenable number.

52651985 is a deficient number, since it is larger than the sum of its proper divisors (12148015).

52651985 is a wasteful number, since it uses less digits than its factorization.

52651985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000.

The product of its digits is 108000, while the sum is 41.

The square root of 52651985 is about 7256.1687549285. The cubic root of 52651985 is about 374.8046033900.

The spelling of 52651985 in words is "fifty-two million, six hundred fifty-one thousand, nine hundred eighty-five".