212556089 has 2 divisors, whose sum is σ = 212556090. Its totient is φ = 212556088.

The previous prime is 212556077. The next prime is 212556101. The reversal of 212556089 is 980655212.

It is a balanced prime because it is at equal distance from previous prime (212556077) and next prime (212556101).

It can be written as a sum of positive squares in only one way, i.e., 164044864 + 48511225 = 12808^2 + 6965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212556089 is a prime.

It is not a weakly prime, because it can be changed into another prime (212556989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106278044 + 106278045.

It is an arithmetic number, because the mean of its divisors is an integer number (106278045).

Almost surely, 2^212556089 is an apocalyptic number.

It is an amenable number.

212556089 is a deficient number, since it is larger than the sum of its proper divisors (1).

212556089 is an equidigital number, since it uses as much as digits as its factorization.

212556089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 212556089 is about 14579.3034470101. The cubic root of 212556089 is about 596.7940943087.

The spelling of 212556089 in words is "two hundred twelve million, five hundred fifty-six thousand, eighty-nine".