52220187 has 16 divisors (see below), whose sum is σ = 77760000. Its totient is φ = 34634952.

The previous prime is 52220177. The next prime is 52220219. The reversal of 52220187 is 78102225.

52220187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52220187 - 2⁴ = 52220171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 52220187.

It is not an unprimeable number, because it can be changed into a prime (52220167) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 514 + ... + 10232.

It is an arithmetic number, because the mean of its divisors is an integer number (4860000).

Almost surely, 2^52220187 is an apocalyptic number.

52220187 is a deficient number, since it is larger than the sum of its proper divisors (25539813).

52220187 is a wasteful number, since it uses less digits than its factorization.

52220187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9927 (or 9921 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 52220187 is about 7226.3536448198. The cubic root of 52220187 is about 373.7772010344. Note that the first 3 decimals are identical.

The spelling of 52220187 in words is "fifty-two million, two hundred twenty thousand, one hundred eighty-seven".