164404550 has 12 divisors (see below), whose sum is σ = 305792556. Its totient is φ = 65761800.

The previous prime is 164404517. The next prime is 164404573. The reversal of 164404550 is 55404461.

164404550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×164404550³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1643996 + ... + 1644095.

It is an arithmetic number, because the mean of its divisors is an integer number (25482713).

Almost surely, 2^164404550 is an apocalyptic number.

164404550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164404550 is a deficient number, since it is larger than the sum of its proper divisors (141388006).

164404550 is a wasteful number, since it uses less digits than its factorization.

164404550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288103 (or 3288098 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 164404550 is about 12822.0337700382. The cubic root of 164404550 is about 547.8200765286.

The spelling of 164404550 in words is "one hundred sixty-four million, four hundred four thousand, five hundred fifty".