52739287 has 4 divisors (see below), whose sum is σ = 55841616. Its totient is φ = 49636960.

The previous prime is 52739263. The next prime is 52739341. The reversal of 52739287 is 78293725.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52739287 - 2¹⁹ = 52214999 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 (52739087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551139 + ... + 1551172.

It is an arithmetic number, because the mean of its divisors is an integer number (13960404).

Almost surely, 2^52739287 is an apocalyptic number.

52739287 is a deficient number, since it is larger than the sum of its proper divisors (3102329).

52739287 is a wasteful number, since it uses less digits than its factorization.

52739287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3102328.

The product of its digits is 211680, while the sum is 43.

The square root of 52739287 is about 7262.1819723827. The cubic root of 52739287 is about 375.0116428978.

The spelling of 52739287 in words is "fifty-two million, seven hundred thirty-nine thousand, two hundred eighty-seven".