245221231 has 8 divisors (see below), whose sum is σ = 250660800. Its totient is φ = 239791008.

The previous prime is 245221199. The next prime is 245221241. The reversal of 245221231 is 132122542.

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 245221231 - 2⁵ = 245221199 is a prime.

It is a super-2 number, since 2×245221231² = 120266904266310722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245221241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90265 + ... + 92941.

It is an arithmetic number, because the mean of its divisors is an integer number (31332600).

Almost surely, 2^245221231 is an apocalyptic number.

245221231 is a deficient number, since it is larger than the sum of its proper divisors (5439569).

245221231 is a wasteful number, since it uses less digits than its factorization.

245221231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673.

The product of its digits is 960, while the sum is 22.

The square root of 245221231 is about 15659.5412129475. The cubic root of 245221231 is about 625.9207599756.

Adding to 245221231 its reverse (132122542), we get a palindrome (377343773).

The spelling of 245221231 in words is "two hundred forty-five million, two hundred twenty-one thousand, two hundred thirty-one".