164577457 has 4 divisors (see below), whose sum is σ = 179539056. Its totient is φ = 149615860.

The previous prime is 164577431. The next prime is 164577557. The reversal of 164577457 is 754775461.

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: 754775461 = 11 ⋅68615951.

It is a cyclic number.

It is not a de Polignac number, because 164577457 - 2¹¹ = 164575409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164577557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7480783 + ... + 7480804.

It is an arithmetic number, because the mean of its divisors is an integer number (44884764).

Almost surely, 2^164577457 is an apocalyptic number.

It is an amenable number.

164577457 is a deficient number, since it is larger than the sum of its proper divisors (14961599).

164577457 is a wasteful number, since it uses less digits than its factorization.

164577457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14961598.

The product of its digits is 823200, while the sum is 46.

The square root of 164577457 is about 12828.7745712519. The cubic root of 164577457 is about 548.0120597360.

The spelling of 164577457 in words is "one hundred sixty-four million, five hundred seventy-seven thousand, four hundred fifty-seven".