52215443 has 4 divisors (see below), whose sum is σ = 59674800. Its totient is φ = 44756088.

The previous prime is 52215437. The next prime is 52215479. The reversal of 52215443 is 34451225.

It is a happy number.

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 52215443 - 2⁸ = 52215187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52215433) 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, 3729668 + ... + 3729681.

It is an arithmetic number, because the mean of its divisors is an integer number (14918700).

Almost surely, 2^52215443 is an apocalyptic number.

52215443 is a deficient number, since it is larger than the sum of its proper divisors (7459357).

52215443 is an equidigital number, since it uses as much as digits as its factorization.

52215443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7459356.

The product of its digits is 4800, while the sum is 26.

The square root of 52215443 is about 7226.0253943645. The cubic root of 52215443 is about 373.7658819588.

Adding to 52215443 its reverse (34451225), we get a palindrome (86666668).

The spelling of 52215443 in words is "fifty-two million, two hundred fifteen thousand, four hundred forty-three".