52782399 has 48 divisors (see below), whose sum is σ = 86561280. Its totient is φ = 30792960.

The previous prime is 52782397. The next prime is 52782419. The reversal of 52782399 is 99328725.

It is not a de Polignac number, because 52782399 - 2¹ = 52782397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52782391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 194634 + ... + 194904.

It is an arithmetic number, because the mean of its divisors is an integer number (1803360).

Almost surely, 2^52782399 is an apocalyptic number.

52782399 is a deficient number, since it is larger than the sum of its proper divisors (33778881).

52782399 is a wasteful number, since it uses less digits than its factorization.

52782399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380 (or 377 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 52782399 is about 7265.1496199321. The cubic root of 52782399 is about 375.1138001286.

The spelling of 52782399 in words is "fifty-two million, seven hundred eighty-two thousand, three hundred ninety-nine".