245410221 has 8 divisors (see below), whose sum is σ = 373958464. Its totient is φ = 140234400.

The previous prime is 245410177. The next prime is 245410271. The reversal of 245410221 is 122014542.

245410221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 245410221 - 2⁶ = 245410157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 11686201 = 245410221 / (2 + 4 + 5 + 4 + 1 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245410271) 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, 5843080 + ... + 5843121.

It is an arithmetic number, because the mean of its divisors is an integer number (46744808).

Almost surely, 2^245410221 is an apocalyptic number.

245410221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

245410221 is a deficient number, since it is larger than the sum of its proper divisors (128548243).

245410221 is a wasteful number, since it uses less digits than its factorization.

245410221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11686211.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 245410221 is about 15665.5743910014. The cubic root of 245410221 is about 626.0815160241.

Adding to 245410221 its reverse (122014542), we get a palindrome (367424763).

The spelling of 245410221 in words is "two hundred forty-five million, four hundred ten thousand, two hundred twenty-one".