52387217 has 8 divisors (see below), whose sum is σ = 56822472. Its totient is φ = 48102400.

The previous prime is 52387213. The next prime is 52387249. The reversal of 52387217 is 71278325.

It can be written as a sum of positive squares in 4 ways, for example, as 1635841 + 50751376 = 1279^2 + 7124^2 .

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 52387217 - 2² = 52387213 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52387211) 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, 36884 + ... + 38277.

It is an arithmetic number, because the mean of its divisors is an integer number (7102809).

Almost surely, 2^52387217 is an apocalyptic number.

It is an amenable number.

52387217 is a deficient number, since it is larger than the sum of its proper divisors (4435255).

52387217 is a wasteful number, since it uses less digits than its factorization.

52387217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75219.

The product of its digits is 23520, while the sum is 35.

The square root of 52387217 is about 7237.9014223738. The cubic root of 52387217 is about 374.1752945885.

The spelling of 52387217 in words is "fifty-two million, three hundred eighty-seven thousand, two hundred seventeen".