166177049 has 2 divisors, whose sum is σ = 166177050. Its totient is φ = 166177048.

The previous prime is 166177043. The next prime is 166177061. The reversal of 166177049 is 940771661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165379600 + 797449 = 12860^2 + 893^2 .

It is a cyclic number.

It is not a de Polignac number, because 166177049 - 2¹⁶ = 166111513 is a prime.

It is a super-2 number, since 2×166177049² = 55229623228696802, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 166176997 and 166177015.

It is not a weakly prime, because it can be changed into another prime (166177043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83088524 + 83088525.

It is an arithmetic number, because the mean of its divisors is an integer number (83088525).

Almost surely, 2^166177049 is an apocalyptic number.

It is an amenable number.

166177049 is a deficient number, since it is larger than the sum of its proper divisors (1).

166177049 is an equidigital number, since it uses as much as digits as its factorization.

166177049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 166177049 is about 12890.9677293832. The cubic root of 166177049 is about 549.7817856104.

The spelling of 166177049 in words is "one hundred sixty-six million, one hundred seventy-seven thousand, forty-nine".