52117865 has 4 divisors (see below), whose sum is σ = 62541444. Its totient is φ = 41694288.

The previous prime is 52117859. The next prime is 52117883. The reversal of 52117865 is 56871125.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5837056 + 46280809 = 2416^2 + 6803^2 .

It is a cyclic number.

It is not a de Polignac number, because 52117865 - 2¹² = 52113769 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5211782 + ... + 5211791.

It is an arithmetic number, because the mean of its divisors is an integer number (15635361).

Almost surely, 2^52117865 is an apocalyptic number.

It is an amenable number.

52117865 is a deficient number, since it is larger than the sum of its proper divisors (10423579).

52117865 is a wasteful number, since it uses less digits than its factorization.

52117865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10423578.

The product of its digits is 16800, while the sum is 35.

The square root of 52117865 is about 7219.2703924981. The cubic root of 52117865 is about 373.5329108463.

The spelling of 52117865 in words is "fifty-two million, one hundred seventeen thousand, eight hundred sixty-five".