214975961 has 2 divisors, whose sum is σ = 214975962. Its totient is φ = 214975960.

The previous prime is 214975949. The next prime is 214975987. The reversal of 214975961 is 169579412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133633600 + 81342361 = 11560^2 + 9019^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214975961 is a prime.

It is not a weakly prime, because it can be changed into another prime (214995961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107487980 + 107487981.

It is an arithmetic number, because the mean of its divisors is an integer number (107487981).

Almost surely, 2^214975961 is an apocalyptic number.

It is an amenable number.

214975961 is a deficient number, since it is larger than the sum of its proper divisors (1).

214975961 is an equidigital number, since it uses as much as digits as its factorization.

214975961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 214975961 is about 14662.0585526044. The cubic root of 214975961 is about 599.0503133593.

The spelling of 214975961 in words is "two hundred fourteen million, nine hundred seventy-five thousand, nine hundred sixty-one".