214551881 has 2 divisors, whose sum is σ = 214551882. Its totient is φ = 214551880.

The previous prime is 214551877. The next prime is 214551941. The reversal of 214551881 is 188155412.

214551881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112360000 + 102191881 = 10600^2 + 10109^2 .

It is a cyclic number.

It is not a de Polignac number, because 214551881 - 2² = 214551877 is a prime.

It is a super-2 number, since 2×214551881² = 92065019281276322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (214551871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107275940 + 107275941.

It is an arithmetic number, because the mean of its divisors is an integer number (107275941).

Almost surely, 2^214551881 is an apocalyptic number.

It is an amenable number.

214551881 is a deficient number, since it is larger than the sum of its proper divisors (1).

214551881 is an equidigital number, since it uses as much as digits as its factorization.

214551881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12800, while the sum is 35.

The square root of 214551881 is about 14647.5895969269. The cubic root of 214551881 is about 598.6561413947.

The spelling of 214551881 in words is "two hundred fourteen million, five hundred fifty-one thousand, eight hundred eighty-one".