52686991 has 8 divisors (see below), whose sum is σ = 61112960. Its totient is φ = 44485848.

The previous prime is 52686983. The next prime is 52687027. The reversal of 52686991 is 19968625.

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 52686991 - 2³ = 52686983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52686901) 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, 55701 + ... + 56638.

It is an arithmetic number, because the mean of its divisors is an integer number (7639120).

Almost surely, 2^52686991 is an apocalyptic number.

52686991 is a deficient number, since it is larger than the sum of its proper divisors (8425969).

52686991 is a wasteful number, since it uses less digits than its factorization.

52686991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112413.

The product of its digits is 233280, while the sum is 46.

The square root of 52686991 is about 7258.5805086119. The cubic root of 52686991 is about 374.8876487129.

The spelling of 52686991 in words is "fifty-two million, six hundred eighty-six thousand, nine hundred ninety-one".