212565146 has 4 divisors (see below), whose sum is σ = 318847722. Its totient is φ = 106282572.

The previous prime is 212565113. The next prime is 212565169. The reversal of 212565146 is 641565212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 170172025 + 42393121 = 13045^2 + 6511^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53141285 + ... + 53141288.

Almost surely, 2^212565146 is an apocalyptic number.

212565146 is a deficient number, since it is larger than the sum of its proper divisors (106282576).

212565146 is a wasteful number, since it uses less digits than its factorization.

212565146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106282575.

The product of its digits is 14400, while the sum is 32.

The square root of 212565146 is about 14579.6140552485. The cubic root of 212565146 is about 596.8025706398.

The spelling of 212565146 in words is "two hundred twelve million, five hundred sixty-five thousand, one hundred forty-six".