5651278489 has 4 divisors (see below), whose sum is σ = 5652463824. Its totient is φ = 5650093156.

The previous prime is 5651278469. The next prime is 5651278511. The reversal of 5651278489 is 9848721565.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5651278489 - 2¹⁷ = 5651147417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5651278469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585487 + ... + 595060.

It is an arithmetic number, because the mean of its divisors is an integer number (1413115956).

Almost surely, 2^5651278489 is an apocalyptic number.

It is an amenable number.

5651278489 is a deficient number, since it is larger than the sum of its proper divisors (1185335).

5651278489 is a wasteful number, since it uses less digits than its factorization.

5651278489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185334.

The product of its digits is 4838400, while the sum is 55.

The square root of 5651278489 is about 75174.9857931480. The cubic root of 5651278489 is about 1781.2118256655.

The spelling of 5651278489 in words is "five billion, six hundred fifty-one million, two hundred seventy-eight thousand, four hundred eighty-nine".