245121316 has 18 divisors (see below), whose sum is σ = 471504950. Its totient is φ = 111418560.

The previous prime is 245121313. The next prime is 245121319. The reversal of 245121316 is 613121542.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (245121313) and next prime (245121319).

It can be written as a sum of positive squares in only one way, i.e., 142706916 + 102414400 = 11946^2 + 10120^2 .

It is not an unprimeable number, because it can be changed into a prime (245121313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 252741 + ... + 253708.

Almost surely, 2^245121316 is an apocalyptic number.

It is an amenable number.

245121316 is a deficient number, since it is larger than the sum of its proper divisors (226383634).

245121316 is a wasteful number, since it uses less digits than its factorization.

245121316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506475 (or 506462 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 245121316 is about 15656.3506603550. The cubic root of 245121316 is about 625.8357382883.

Adding to 245121316 its reverse (613121542), we get a palindrome (858242858).

The spelling of 245121316 in words is "two hundred forty-five million, one hundred twenty-one thousand, three hundred sixteen".