214532621 has 2 divisors, whose sum is σ = 214532622. Its totient is φ = 214532620.

The previous prime is 214532599. The next prime is 214532663. The reversal of 214532621 is 126235412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210975625 + 3556996 = 14525^2 + 1886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214532621 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214532221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107266310 + 107266311.

It is an arithmetic number, because the mean of its divisors is an integer number (107266311).

Almost surely, 2^214532621 is an apocalyptic number.

It is an amenable number.

214532621 is a deficient number, since it is larger than the sum of its proper divisors (1).

214532621 is an equidigital number, since it uses as much as digits as its factorization.

214532621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 26.

The square root of 214532621 is about 14646.9321361164. The cubic root of 214532621 is about 598.6382273712.

The spelling of 214532621 in words is "two hundred fourteen million, five hundred thirty-two thousand, six hundred twenty-one".