6281299445 has 4 divisors (see below), whose sum is σ = 7537559340. Its totient is φ = 5025039552.

The previous prime is 6281299421. The next prime is 6281299447. The reversal of 6281299445 is 5449921826.

6281299445 = 56041² + 56042².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5449921826 = 2 ⋅2724960913.

It can be written as a sum of positive squares in 2 ways, for example, as 3140705764 + 3140593681 = 56042^2 + 56041^2 .

It is a cyclic number.

It is not a de Polignac number, because 6281299445 - 2¹⁰ = 6281298421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6281299393 and 6281299402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6281299447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628129940 + ... + 628129949.

It is an arithmetic number, because the mean of its divisors is an integer number (1884389835).

Almost surely, 2^6281299445 is an apocalyptic number.

6281299445 is the 56042-nd centered square number.

It is an amenable number.

6281299445 is a deficient number, since it is larger than the sum of its proper divisors (1256259895).

6281299445 is a wasteful number, since it uses less digits than its factorization.

6281299445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256259894.

The product of its digits is 1244160, while the sum is 50.

The square root of 6281299445 is about 79254.6493588862. The cubic root of 6281299445 is about 1845.0855144056.

The spelling of 6281299445 in words is "six billion, two hundred eighty-one million, two hundred ninety-nine thousand, four hundred forty-five".