52686993 has 8 divisors (see below), whose sum is σ = 70367488. Its totient is φ = 35065584.

The previous prime is 52686983. The next prime is 52687027. The reversal of 52686993 is 39968625.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52686993 - 2¹² = 52682897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (52686923) 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, 12646 + ... + 16287.

It is an arithmetic number, because the mean of its divisors is an integer number (8795936).

Almost surely, 2^52686993 is an apocalyptic number.

It is an amenable number.

52686993 is a deficient number, since it is larger than the sum of its proper divisors (17680495).

52686993 is a wasteful number, since it uses less digits than its factorization.

52686993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29543.

The product of its digits is 699840, while the sum is 48.

The square root of 52686993 is about 7258.5806463798. The cubic root of 52686993 is about 374.8876534565.

The spelling of 52686993 in words is "fifty-two million, six hundred eighty-six thousand, nine hundred ninety-three".