52759209 has 4 divisors (see below), whose sum is σ = 70345616. Its totient is φ = 35172804.

The previous prime is 52759193. The next prime is 52759247. The reversal of 52759209 is 90295725.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 52759209 - 2⁴ = 52759193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52759909) 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 3 ways as a sum of consecutive naturals, for example, 8793199 + ... + 8793204.

It is an arithmetic number, because the mean of its divisors is an integer number (17586404).

Almost surely, 2^52759209 is an apocalyptic number.

It is an amenable number.

52759209 is a deficient number, since it is larger than the sum of its proper divisors (17586407).

52759209 is a wasteful number, since it uses less digits than its factorization.

52759209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17586406.

The product of its (nonzero) digits is 56700, while the sum is 39.

The square root of 52759209 is about 7263.5534692050. The cubic root of 52759209 is about 375.0588565397.

The spelling of 52759209 in words is "fifty-two million, seven hundred fifty-nine thousand, two hundred nine".