52782813 has 16 divisors (see below), whose sum is σ = 80894400. Its totient is φ = 33974640.

The previous prime is 52782811. The next prime is 52782827. The reversal of 52782813 is 31828725.

It is not a de Polignac number, because 52782813 - 2¹ = 52782811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52782811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32923 + ... + 34488.

It is an arithmetic number, because the mean of its divisors is an integer number (5055900).

Almost surely, 2^52782813 is an apocalyptic number.

It is an amenable number.

52782813 is a deficient number, since it is larger than the sum of its proper divisors (28111587).

52782813 is a wasteful number, since it uses less digits than its factorization.

52782813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67449 (or 67443 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 52782813 is about 7265.1781120630. The cubic root of 52782813 is about 375.1147808640.

The spelling of 52782813 in words is "fifty-two million, seven hundred eighty-two thousand, eight hundred thirteen".