5131226561 has 8 divisors (see below), whose sum is σ = 5392847040. Its totient is φ = 4872816432.

The previous prime is 5131226543. The next prime is 5131226567. The reversal of 5131226561 is 1656221315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5131226561 - 2¹⁴ = 5131210177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5131226567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799310 + ... + 805703.

It is an arithmetic number, because the mean of its divisors is an integer number (674105880).

Almost surely, 2^5131226561 is an apocalyptic number.

It is an amenable number.

5131226561 is a deficient number, since it is larger than the sum of its proper divisors (261620479).

5131226561 is a wasteful number, since it uses less digits than its factorization.

5131226561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605175.

The product of its digits is 10800, while the sum is 32.

The square root of 5131226561 is about 71632.5803039371. The cubic root of 5131226561 is about 1724.8065663938.

Adding to 5131226561 its reverse (1656221315), we get a palindrome (6787447876).

The spelling of 5131226561 in words is "five billion, one hundred thirty-one million, two hundred twenty-six thousand, five hundred sixty-one".