164224057 has 4 divisors (see below), whose sum is σ = 164263680. Its totient is φ = 164184436.

The previous prime is 164224037. The next prime is 164224061. The reversal of 164224057 is 750422461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 750422461 = 19 ⋅39495919.

It is a cyclic number.

It is not a de Polignac number, because 164224057 - 2¹⁹ = 163699769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164224037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12757 + ... + 22162.

It is an arithmetic number, because the mean of its divisors is an integer number (41065920).

Almost surely, 2^164224057 is an apocalyptic number.

It is an amenable number.

164224057 is a deficient number, since it is larger than the sum of its proper divisors (39623).

164224057 is an equidigital number, since it uses as much as digits as its factorization.

164224057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39622.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 164224057 is about 12814.9934451798. The cubic root of 164224057 is about 547.6195267349.

The spelling of 164224057 in words is "one hundred sixty-four million, two hundred twenty-four thousand, fifty-seven".