245122449 has 16 divisors (see below), whose sum is σ = 383968704. Its totient is φ = 137131200.

The previous prime is 245122441. The next prime is 245122453. The reversal of 245122449 is 944221542.

It is a happy number.

It is not a de Polignac number, because 245122449 - 2³ = 245122441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (245122441) 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 15 ways as a sum of consecutive naturals, for example, 285262 + ... + 286119.

It is an arithmetic number, because the mean of its divisors is an integer number (23998044).

Almost surely, 2^245122449 is an apocalyptic number.

It is an amenable number.

245122449 is a deficient number, since it is larger than the sum of its proper divisors (138846255).

245122449 is a wasteful number, since it uses less digits than its factorization.

245122449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571408.

The product of its digits is 23040, while the sum is 33.

The square root of 245122449 is about 15656.3868437133. The cubic root of 245122449 is about 625.8367025330.

The spelling of 245122449 in words is "two hundred forty-five million, one hundred twenty-two thousand, four hundred forty-nine".