164556534 has 16 divisors (see below), whose sum is σ = 337140720. Its totient is φ = 53514240.

The previous prime is 164556533. The next prime is 164556551. The reversal of 164556534 is 435655461.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 164556492 and 164556501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164556533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334219 + ... + 334710.

It is an arithmetic number, because the mean of its divisors is an integer number (21071295).

Almost surely, 2^164556534 is an apocalyptic number.

164556534 is an abundant number, since it is smaller than the sum of its proper divisors (172584186).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164556534 is a wasteful number, since it uses less digits than its factorization.

164556534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668975.

The product of its digits is 216000, while the sum is 39.

The square root of 164556534 is about 12827.9590738356. The cubic root of 164556534 is about 547.9888355301.

The spelling of 164556534 in words is "one hundred sixty-four million, five hundred fifty-six thousand, five hundred thirty-four".