164465550 has 36 divisors (see below), whose sum is σ = 441865320. Its totient is φ = 43857360.

The previous prime is 164465513. The next prime is 164465551. The reversal of 164465550 is 55564461.

164465550 is a `hidden beast` number, since 1 + 6 + 44 + 65 + 550 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164465551) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 182290 + ... + 183189.

Almost surely, 2^164465550 is an apocalyptic number.

164465550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164465550 is an abundant number, since it is smaller than the sum of its proper divisors (277399770).

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

164465550 is a wasteful number, since it uses less digits than its factorization.

164465550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365497 (or 365489 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 164465550 is about 12824.4122672347. The cubic root of 164465550 is about 547.8878217999.

It can be divided in two parts, 16 and 4465550, that added together give a triangular number (4465566 = T₂₉₈₈).

The spelling of 164465550 in words is "one hundred sixty-four million, four hundred sixty-five thousand, five hundred fifty".