164051565 has 16 divisors (see below), whose sum is σ = 266932800. Its totient is φ = 86010752.

The previous prime is 164051557. The next prime is 164051593. The reversal of 164051565 is 565150461.

It is a cyclic number.

It is not a de Polignac number, because 164051565 - 2³ = 164051557 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 91800 + ... + 93569.

It is an arithmetic number, because the mean of its divisors is an integer number (16683300).

Almost surely, 2^164051565 is an apocalyptic number.

164051565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164051565 is a deficient number, since it is larger than the sum of its proper divisors (102881235).

164051565 is a wasteful number, since it uses less digits than its factorization.

164051565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185436.

The product of its (nonzero) digits is 18000, while the sum is 33.

The square root of 164051565 is about 12808.2615916447. The cubic root of 164051565 is about 547.4277296655.

The spelling of 164051565 in words is "one hundred sixty-four million, fifty-one thousand, five hundred sixty-five".