52116643 has 4 divisors (see below), whose sum is σ = 54382608. Its totient is φ = 49850680.

The previous prime is 52116641. The next prime is 52116653. The reversal of 52116643 is 34661125.

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 52116643 - 2¹ = 52116641 is a prime.

It is a super-2 number, since 2×52116643² = 5432288955178898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52116641) 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, 1132948 + ... + 1132993.

It is an arithmetic number, because the mean of its divisors is an integer number (13595652).

Almost surely, 2^52116643 is an apocalyptic number.

52116643 is a deficient number, since it is larger than the sum of its proper divisors (2265965).

52116643 is a wasteful number, since it uses less digits than its factorization.

52116643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2265964.

The product of its digits is 4320, while the sum is 28.

The square root of 52116643 is about 7219.1857574106. The cubic root of 52116643 is about 373.5299914329.

Adding to 52116643 its reverse (34661125), we get a palindrome (86777768).

The spelling of 52116643 in words is "fifty-two million, one hundred sixteen thousand, six hundred forty-three".