164455500 has 96 divisors (see below), whose sum is σ = 522482688. Its totient is φ = 39864000.

The previous prime is 164455483. The next prime is 164455547. The reversal of 164455500 is 5554461.

It is a super-2 number, since 2×164455500² = 54091222960500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 in 31 ways as a sum of consecutive naturals, for example, 11517 + ... + 21483.

It is an arithmetic number, because the mean of its divisors is an integer number (5442528).

Almost surely, 2^164455500 is an apocalyptic number.

164455500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164455500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261241344).

164455500 is an abundant number, since it is smaller than the sum of its proper divisors (358027188).

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

164455500 is a wasteful number, since it uses less digits than its factorization.

164455500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000 (or 9988 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 164455500 is about 12824.0204304266. The cubic root of 164455500 is about 547.8766616415.

It can be divided in two parts, 16445 and 5500, that added together give a triangular number (21945 = T₂₀₉).

The spelling of 164455500 in words is "one hundred sixty-four million, four hundred fifty-five thousand, five hundred".