245221198 has 8 divisors (see below), whose sum is σ = 369132408. Its totient is φ = 122177064.

The previous prime is 245221189. The next prime is 245221199. The reversal of 245221198 is 891122542.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245221199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216061 + ... + 217192.

It is an arithmetic number, because the mean of its divisors is an integer number (46141551).

Almost surely, 2^245221198 is an apocalyptic number.

245221198 is a deficient number, since it is larger than the sum of its proper divisors (123911210).

245221198 is a wasteful number, since it uses less digits than its factorization.

245221198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433538.

The product of its digits is 11520, while the sum is 34.

The square root of 245221198 is about 15659.5401592767. The cubic root of 245221198 is about 625.9207318984.

The spelling of 245221198 in words is "two hundred forty-five million, two hundred twenty-one thousand, one hundred ninety-eight".