164416251 has 4 divisors (see below), whose sum is σ = 219221672. Its totient is φ = 109610832.

The previous prime is 164416249. The next prime is 164416279. The reversal of 164416251 is 152614461.

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

It is not a de Polignac number, because 164416251 - 2¹ = 164416249 is a prime.

It is a super-3 number, since 3×164416251³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164416201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27402706 + ... + 27402711.

It is an arithmetic number, because the mean of its divisors is an integer number (54805418).

Almost surely, 2^164416251 is an apocalyptic number.

164416251 is a deficient number, since it is larger than the sum of its proper divisors (54805421).

164416251 is an equidigital number, since it uses as much as digits as its factorization.

164416251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54805420.

The product of its digits is 5760, while the sum is 30.

The square root of 164416251 is about 12822.4900467889. The cubic root of 164416251 is about 547.8330727030.

The spelling of 164416251 in words is "one hundred sixty-four million, four hundred sixteen thousand, two hundred fifty-one".