52781071 has 8 divisors (see below), whose sum is σ = 60410880. Its totient is φ = 45173688.

The previous prime is 52781023. The next prime is 52781083. The reversal of 52781071 is 17018725.

It is a happy number.

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

It is not a de Polignac number, because 52781071 - 2⁷ = 52780943 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 (52781171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211 + ... + 10276.

It is an arithmetic number, because the mean of its divisors is an integer number (7551360).

Almost surely, 2^52781071 is an apocalyptic number.

52781071 is a deficient number, since it is larger than the sum of its proper divisors (7629809).

52781071 is a wasteful number, since it uses less digits than its factorization.

52781071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11213.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 52781071 is about 7265.0582241301. The cubic root of 52781071 is about 375.1106541600.

Adding to 52781071 its reverse (17018725), we get a palindrome (69799796).

The spelling of 52781071 in words is "fifty-two million, seven hundred eighty-one thousand, seventy-one".