164256215 has 8 divisors (see below), whose sum is σ = 197179920. Its totient is φ = 131356672.

The previous prime is 164256187. The next prime is 164256223. The reversal of 164256215 is 512652461.

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 164256215 - 2¹² = 164252119 is a prime.

It is a super-2 number, since 2×164256215² = 53960208332252450, 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 7 ways as a sum of consecutive naturals, for example, 16727 + ... + 24663.

It is an arithmetic number, because the mean of its divisors is an integer number (24647490).

Almost surely, 2^164256215 is an apocalyptic number.

164256215 is a deficient number, since it is larger than the sum of its proper divisors (32923705).

164256215 is an equidigital number, since it uses as much as digits as its factorization.

164256215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081.

The product of its digits is 14400, while the sum is 32.

The square root of 164256215 is about 12816.2480859259. The cubic root of 164256215 is about 547.6552689595.

The spelling of 164256215 in words is "one hundred sixty-four million, two hundred fifty-six thousand, two hundred fifteen".