52215646 has 16 divisors (see below), whose sum is σ = 90850176. Its totient is φ = 22043736.

The previous prime is 52215643. The next prime is 52215661. The reversal of 52215646 is 64651225.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52215641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26896 + ... + 28771.

It is an arithmetic number, because the mean of its divisors is an integer number (5678136).

Almost surely, 2^52215646 is an apocalyptic number.

52215646 is a deficient number, since it is larger than the sum of its proper divisors (38634530).

52215646 is a wasteful number, since it uses less digits than its factorization.

52215646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55743.

The product of its digits is 14400, while the sum is 31.

The square root of 52215646 is about 7226.0394408002. The cubic root of 52215646 is about 373.7663663262.

The spelling of 52215646 in words is "fifty-two million, two hundred fifteen thousand, six hundred forty-six".