212176049 has 4 divisors (see below), whose sum is σ = 212476020. Its totient is φ = 211876080.

The previous prime is 212176009. The next prime is 212176051. The reversal of 212176049 is 940671212.

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 53919649 + 158256400 = 7343^2 + 12580^2 .

It is a cyclic number.

It is not a de Polignac number, because 212176049 - 2²⁰ = 211127473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212176009) 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, 148922 + ... + 150339.

It is an arithmetic number, because the mean of its divisors is an integer number (53119005).

Almost surely, 2^212176049 is an apocalyptic number.

It is an amenable number.

212176049 is a deficient number, since it is larger than the sum of its proper divisors (299971).

212176049 is an equidigital number, since it uses as much as digits as its factorization.

212176049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299970.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 212176049 is about 14566.2640714769. The cubic root of 212176049 is about 596.4382024661.

The spelling of 212176049 in words is "two hundred twelve million, one hundred seventy-six thousand, forty-nine".