130722457 has 2 divisors, whose sum is σ = 130722458. Its totient is φ = 130722456.

The previous prime is 130722437. The next prime is 130722461. The reversal of 130722457 is 754227031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88003161 + 42719296 = 9381^2 + 6536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130722457 is a prime.

It is not a weakly prime, because it can be changed into another prime (130722437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65361228 + 65361229.

It is an arithmetic number, because the mean of its divisors is an integer number (65361229).

Almost surely, 2^130722457 is an apocalyptic number.

It is an amenable number.

130722457 is a deficient number, since it is larger than the sum of its proper divisors (1).

130722457 is an equidigital number, since it uses as much as digits as its factorization.

130722457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 130722457 is about 11433.3921912965. The cubic root of 130722457 is about 507.5163844031.

Adding to 130722457 its reverse (754227031), we get a palindrome (884949488).

The spelling of 130722457 in words is "one hundred thirty million, seven hundred twenty-two thousand, four hundred fifty-seven".