52782749 has 8 divisors (see below), whose sum is σ = 53657280. Its totient is φ = 51912000.

The previous prime is 52782733. The next prime is 52782761. The reversal of 52782749 is 94728725.

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 52782749 - 2⁴ = 52782733 is a prime.

It is a super-3 number, since 3×52782749³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52782799) 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, 43349 + ... + 44549.

It is an arithmetic number, because the mean of its divisors is an integer number (6707160).

Almost surely, 2^52782749 is an apocalyptic number.

It is an amenable number.

52782749 is a deficient number, since it is larger than the sum of its proper divisors (874531).

52782749 is a wasteful number, since it uses less digits than its factorization.

52782749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1891.

The product of its digits is 282240, while the sum is 44.

The square root of 52782749 is about 7265.1737074897. The cubic root of 52782749 is about 375.1146292531.

The spelling of 52782749 in words is "fifty-two million, seven hundred eighty-two thousand, seven hundred forty-nine".