129572797 has 2 divisors, whose sum is σ = 129572798. Its totient is φ = 129572796.

The previous prime is 129572789. The next prime is 129572873. The reversal of 129572797 is 797275921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69572281 + 60000516 = 8341^2 + 7746^2 .

It is a cyclic number.

It is not a de Polignac number, because 129572797 - 2³ = 129572789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129572797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129572747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64786398 + 64786399.

It is an arithmetic number, because the mean of its divisors is an integer number (64786399).

Almost surely, 2^129572797 is an apocalyptic number.

It is an amenable number.

129572797 is a deficient number, since it is larger than the sum of its proper divisors (1).

129572797 is an equidigital number, since it uses as much as digits as its factorization.

129572797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 555660, while the sum is 49.

The square root of 129572797 is about 11383.0047439154. The cubic root of 129572797 is about 506.0241894522.

The spelling of 129572797 in words is "one hundred twenty-nine million, five hundred seventy-two thousand, seven hundred ninety-seven".