164227550 has 24 divisors (see below), whose sum is σ = 312917472. Its totient is φ = 64088000.

The previous prime is 164227513. The next prime is 164227561. The reversal of 164227550 is 55722461.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 38006 + ... + 42105.

It is an arithmetic number, because the mean of its divisors is an integer number (13038228).

Almost surely, 2^164227550 is an apocalyptic number.

164227550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164227550 is a deficient number, since it is larger than the sum of its proper divisors (148689922).

164227550 is a wasteful number, since it uses less digits than its factorization.

164227550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80164 (or 80159 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 164227550 is about 12815.1297301276. The cubic root of 164227550 is about 547.6234092790.

It can be divided in two parts, 1642 and 27550, that added together give a palindrome (29192).

The spelling of 164227550 in words is "one hundred sixty-four million, two hundred twenty-seven thousand, five hundred fifty".