5521317731 has 2 divisors, whose sum is σ = 5521317732. Its totient is φ = 5521317730.

The previous prime is 5521317727. The next prime is 5521317833. The reversal of 5521317731 is 1377131255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5521317731 - 2² = 5521317727 is a prime.

It is a super-2 number, since 2×5521317731² = 60969898973309976722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5521317691 and 5521317700.

It is not a weakly prime, because it can be changed into another prime (5521317701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2760658865 + 2760658866.

It is an arithmetic number, because the mean of its divisors is an integer number (2760658866).

Almost surely, 2^5521317731 is an apocalyptic number.

5521317731 is a deficient number, since it is larger than the sum of its proper divisors (1).

5521317731 is an equidigital number, since it uses as much as digits as its factorization.

5521317731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22050, while the sum is 35.

The square root of 5521317731 is about 74305.5699863745. The cubic root of 5521317731 is about 1767.4518037709.

Adding to 5521317731 its reverse (1377131255), we get a palindrome (6898448986).

The spelling of 5521317731 in words is "five billion, five hundred twenty-one million, three hundred seventeen thousand, seven hundred thirty-one".