164143555 has 8 divisors (see below), whose sum is σ = 197370000. Its totient is φ = 131049696.

The previous prime is 164143547. The next prime is 164143579. The reversal of 164143555 is 555341461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164143555 - 2³ = 164143547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164143555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30400 + ... + 35389.

It is an arithmetic number, because the mean of its divisors is an integer number (24671250).

Almost surely, 2^164143555 is an apocalyptic number.

164143555 is a deficient number, since it is larger than the sum of its proper divisors (33226445).

164143555 is an equidigital number, since it uses as much as digits as its factorization.

164143555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66293.

The product of its digits is 36000, while the sum is 34.

The square root of 164143555 is about 12811.8521299615. The cubic root of 164143555 is about 547.5300317826.

The spelling of 164143555 in words is "one hundred sixty-four million, one hundred forty-three thousand, five hundred fifty-five".