164136551 has 4 divisors (see below), whose sum is σ = 168572712. Its totient is φ = 159700392.

The previous prime is 164136541. The next prime is 164136563. The reversal of 164136551 is 155631461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164136551 - 2¹⁴ = 164120167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164136541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2218025 + ... + 2218098.

It is an arithmetic number, because the mean of its divisors is an integer number (42143178).

Almost surely, 2^164136551 is an apocalyptic number.

164136551 is a deficient number, since it is larger than the sum of its proper divisors (4436161).

164136551 is an equidigital number, since it uses as much as digits as its factorization.

164136551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436160.

The product of its digits is 10800, while the sum is 32.

The square root of 164136551 is about 12811.5787863948. The cubic root of 164136551 is about 547.5222439758.

The spelling of 164136551 in words is "one hundred sixty-four million, one hundred thirty-six thousand, five hundred fifty-one".