197220281 has 8 divisors (see below), whose sum is σ = 209620224. Its totient is φ = 184909120.

The previous prime is 197220263. The next prime is 197220293. The reversal of 197220281 is 182022791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 197220281 - 2²² = 193025977 is a prime.

It is a super-2 number, since 2×197220281² = 77791678475437922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197220211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17585 + ... + 26526.

It is an arithmetic number, because the mean of its divisors is an integer number (26202528).

Almost surely, 2^197220281 is an apocalyptic number.

It is an amenable number.

197220281 is a deficient number, since it is larger than the sum of its proper divisors (12399943).

197220281 is a wasteful number, since it uses less digits than its factorization.

197220281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44391.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 197220281 is about 14043.5138409160. The cubic root of 197220281 is about 582.0815820341.

The spelling of 197220281 in words is "one hundred ninety-seven million, two hundred twenty thousand, two hundred eighty-one".