212470591 has 2 divisors, whose sum is σ = 212470592. Its totient is φ = 212470590.

The previous prime is 212470571. The next prime is 212470627. The reversal of 212470591 is 195074212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212470591 - 2⁷ = 212470463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212470561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106235295 + 106235296.

It is an arithmetic number, because the mean of its divisors is an integer number (106235296).

Almost surely, 2^212470591 is an apocalyptic number.

212470591 is a deficient number, since it is larger than the sum of its proper divisors (1).

212470591 is an equidigital number, since it uses as much as digits as its factorization.

212470591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 212470591 is about 14576.3709818322. The cubic root of 212470591 is about 596.7140659507.

The spelling of 212470591 in words is "two hundred twelve million, four hundred seventy thousand, five hundred ninety-one".