166577053 has 4 divisors (see below), whose sum is σ = 166603068. Its totient is φ = 166551040.

The previous prime is 166577051. The next prime is 166577087. The reversal of 166577053 is 350775661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 41964484 + 124612569 = 6478^2 + 11163^2 .

It is a cyclic number.

It is not a de Polignac number, because 166577053 - 2¹ = 166577051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166576997 and 166577015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166577051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4083 + ... + 18703.

It is an arithmetic number, because the mean of its divisors is an integer number (41650767).

Almost surely, 2^166577053 is an apocalyptic number.

It is an amenable number.

166577053 is a deficient number, since it is larger than the sum of its proper divisors (26015).

166577053 is a wasteful number, since it uses less digits than its factorization.

166577053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26014.

The product of its (nonzero) digits is 132300, while the sum is 40.

The square root of 166577053 is about 12906.4732983104. The cubic root of 166577053 is about 550.2225578636. Note that the first 3 decimals are identical.

The spelling of 166577053 in words is "one hundred sixty-six million, five hundred seventy-seven thousand, fifty-three".