212055577 has 2 divisors, whose sum is σ = 212055578. Its totient is φ = 212055576.

The previous prime is 212055559. The next prime is 212055589. The reversal of 212055577 is 775550212.

212055577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191434896 + 20620681 = 13836^2 + 4541^2 .

It is a cyclic number.

It is not a de Polignac number, because 212055577 - 2⁷ = 212055449 is a prime.

It is not a weakly prime, because it can be changed into another prime (212053577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106027788 + 106027789.

It is an arithmetic number, because the mean of its divisors is an integer number (106027789).

Almost surely, 2^212055577 is an apocalyptic number.

It is an amenable number.

212055577 is a deficient number, since it is larger than the sum of its proper divisors (1).

212055577 is an equidigital number, since it uses as much as digits as its factorization.

212055577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24500, while the sum is 34.

The square root of 212055577 is about 14562.1281755106. The cubic root of 212055577 is about 596.3252966863.

The spelling of 212055577 in words is "two hundred twelve million, fifty-five thousand, five hundred seventy-seven".