164505457 has 2 divisors, whose sum is σ = 164505458. Its totient is φ = 164505456.

The previous prime is 164505433. The next prime is 164505463. The reversal of 164505457 is 754505461.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97002801 + 67502656 = 9849^2 + 8216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164505457 is a prime.

It is not a weakly prime, because it can be changed into another prime (164505557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82252728 + 82252729.

It is an arithmetic number, because the mean of its divisors is an integer number (82252729).

Almost surely, 2^164505457 is an apocalyptic number.

It is an amenable number.

164505457 is a deficient number, since it is larger than the sum of its proper divisors (1).

164505457 is an equidigital number, since it uses as much as digits as its factorization.

164505457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 164505457 is about 12825.9680726252. The cubic root of 164505457 is about 547.9321325813.

The spelling of 164505457 in words is "one hundred sixty-four million, five hundred five thousand, four hundred fifty-seven".