52215616 has 14 divisors (see below), whose sum is σ = 103615490. Its totient is φ = 26107776.

The previous prime is 52215607. The next prime is 52215641. The reversal of 52215616 is 61651225.

52215616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 37161216 + 15054400 = 6096^2 + 3880^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 407871 + ... + 407998.

Almost surely, 2^52215616 is an apocalyptic number.

It is an amenable number.

52215616 is a deficient number, since it is larger than the sum of its proper divisors (51399874).

52215616 is an equidigital number, since it uses as much as digits as its factorization.

52215616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815881 (or 815871 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 52215616 is about 7226.0373649740. The cubic root of 52215616 is about 373.7662947449.

The spelling of 52215616 in words is "fifty-two million, two hundred fifteen thousand, six hundred sixteen".