245228447 has 4 divisors (see below), whose sum is σ = 246733080. Its totient is φ = 243723816.

The previous prime is 245228443. The next prime is 245228453. The reversal of 245228447 is 744822542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744822542 = 2 ⋅372411271.

It is a cyclic number.

It is not a de Polignac number, because 245228447 - 2² = 245228443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245228447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245228443) 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 3 ways as a sum of consecutive naturals, for example, 752072 + ... + 752397.

It is an arithmetic number, because the mean of its divisors is an integer number (61683270).

Almost surely, 2^245228447 is an apocalyptic number.

245228447 is a deficient number, since it is larger than the sum of its proper divisors (1504633).

245228447 is a wasteful number, since it uses less digits than its factorization.

245228447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504632.

The product of its digits is 143360, while the sum is 38.

The square root of 245228447 is about 15659.7716139157. The cubic root of 245228447 is about 625.9268994656.

The spelling of 245228447 in words is "two hundred forty-five million, two hundred twenty-eight thousand, four hundred forty-seven".