164520550 has 12 divisors (see below), whose sum is σ = 306008316. Its totient is φ = 65808200.

The previous prime is 164520547. The next prime is 164520569. The reversal of 164520550 is 55025461.

164520550 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-2 number, since 2×164520550² = 54134022744605000, which contains 22 as substring.

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, 1645156 + ... + 1645255.

It is an arithmetic number, because the mean of its divisors is an integer number (25500693).

Almost surely, 2^164520550 is an apocalyptic number.

164520550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164520550 is a deficient number, since it is larger than the sum of its proper divisors (141487766).

164520550 is a wasteful number, since it uses less digits than its factorization.

164520550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290423 (or 3290418 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 164520550 is about 12826.5564357703. The cubic root of 164520550 is about 547.9488892428.

The spelling of 164520550 in words is "one hundred sixty-four million, five hundred twenty thousand, five hundred fifty".