197215801 has 8 divisors (see below), whose sum is σ = 207727520. Its totient is φ = 186717312.

The previous prime is 197215787. The next prime is 197215813. The reversal of 197215801 is 108512791.

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 197215801 - 2²³ = 188827193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197215871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47266 + ... + 51268.

It is an arithmetic number, because the mean of its divisors is an integer number (25965940).

Almost surely, 2^197215801 is an apocalyptic number.

It is an amenable number.

197215801 is a deficient number, since it is larger than the sum of its proper divisors (10511719).

197215801 is a wasteful number, since it uses less digits than its factorization.

197215801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615.

The product of its (nonzero) digits is 5040, while the sum is 34.

The square root of 197215801 is about 14043.3543357704. The cubic root of 197215801 is about 582.0771745340.

The spelling of 197215801 in words is "one hundred ninety-seven million, two hundred fifteen thousand, eight hundred one".