164266057 has 4 divisors (see below), whose sum is σ = 164423700. Its totient is φ = 164108416.

The previous prime is 164265989. The next prime is 164266073. The reversal of 164266057 is 750662461.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 121088016 + 43178041 = 11004^2 + 6571^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164266057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164266657) 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, 77248 + ... + 79345.

It is an arithmetic number, because the mean of its divisors is an integer number (41105925).

Almost surely, 2^164266057 is an apocalyptic number.

It is an amenable number.

164266057 is a deficient number, since it is larger than the sum of its proper divisors (157643).

164266057 is a wasteful number, since it uses less digits than its factorization.

164266057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157642.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 164266057 is about 12816.6320459004. The cubic root of 164266057 is about 547.6662069840. Note that the first 3 decimals are identical.

The spelling of 164266057 in words is "one hundred sixty-four million, two hundred sixty-six thousand, fifty-seven".