52681493 has 8 divisors (see below), whose sum is σ = 55646976. Its totient is φ = 49795200.

The previous prime is 52681481. The next prime is 52681537. The reversal of 52681493 is 39418625.

It is a happy number.

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 52681493 - 2¹⁰ = 52680469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52681403) 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, 18428 + ... + 21093.

It is an arithmetic number, because the mean of its divisors is an integer number (6955872).

Almost surely, 2^52681493 is an apocalyptic number.

It is an amenable number.

52681493 is a deficient number, since it is larger than the sum of its proper divisors (2965483).

52681493 is a wasteful number, since it uses less digits than its factorization.

52681493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39595.

The product of its digits is 51840, while the sum is 38.

The square root of 52681493 is about 7258.2017745444. The cubic root of 52681493 is about 374.8746081504.

The spelling of 52681493 in words is "fifty-two million, six hundred eighty-one thousand, four hundred ninety-three".