212790251 has 2 divisors, whose sum is σ = 212790252. Its totient is φ = 212790250.

The previous prime is 212790239. The next prime is 212790269. The reversal of 212790251 is 152097212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212790251 - 2²⁶ = 145681387 is a prime.

It is not a weakly prime, because it can be changed into another prime (212790211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106395125 + 106395126.

It is an arithmetic number, because the mean of its divisors is an integer number (106395126).

Almost surely, 2^212790251 is an apocalyptic number.

212790251 is a deficient number, since it is larger than the sum of its proper divisors (1).

212790251 is an equidigital number, since it uses as much as digits as its factorization.

212790251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 212790251 is about 14587.3318670688. The cubic root of 212790251 is about 597.0131662309.

The spelling of 212790251 in words is "two hundred twelve million, seven hundred ninety thousand, two hundred fifty-one".