214945 has 4 divisors (see below), whose sum is σ = 257940. Its totient is φ = 171952.

The previous prime is 214943. The next prime is 214967. The reversal of 214945 is 549412.

214945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88209 + 126736 = 297^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 214945 - 2¹ = 214943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (214943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21490 + ... + 21499.

It is an arithmetic number, because the mean of its divisors is an integer number (64485).

2²¹⁴⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

214945 is a deficient number, since it is larger than the sum of its proper divisors (42995).

214945 is an equidigital number, since it uses as much as digits as its factorization.

214945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42994.

The product of its digits is 1440, while the sum is 25.

The square root of 214945 is about 463.6216129561. The cubic root of 214945 is about 59.9021553419.

It can be divided in two parts, 2 and 14945, that multiplied together give a triangular number (29890 = T₂₄₄).

The spelling of 214945 in words is "two hundred fourteen thousand, nine hundred forty-five".