214549997 has 4 divisors (see below), whose sum is σ = 214599840. Its totient is φ = 214500156.

The previous prime is 214549991. The next prime is 214550023. The reversal of 214549997 is 799945412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214549997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214549991) 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, 17783 + ... + 27300.

It is an arithmetic number, because the mean of its divisors is an integer number (53649960).

Almost surely, 2^214549997 is an apocalyptic number.

It is an amenable number.

214549997 is a deficient number, since it is larger than the sum of its proper divisors (49843).

214549997 is an equidigital number, since it uses as much as digits as its factorization.

214549997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49842.

The product of its digits is 816480, while the sum is 50.

The square root of 214549997 is about 14647.5252858631. The cubic root of 214549997 is about 598.6543891045.

The spelling of 214549997 in words is "two hundred fourteen million, five hundred forty-nine thousand, nine hundred ninety-seven".