2991525497 has 2 divisors, whose sum is σ = 2991525498. Its totient is φ = 2991525496.

The previous prime is 2991525491. The next prime is 2991525499. The reversal of 2991525497 is 7945251992.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2958163321 + 33362176 = 54389^2 + 5776^2 .

It is a cyclic number.

It is not a de Polignac number, because 2991525497 - 2²⁶ = 2924416633 is a prime.

Together with 2991525499, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2991525491) 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 as a sum of consecutive naturals, namely, 1495762748 + 1495762749.

It is an arithmetic number, because the mean of its divisors is an integer number (1495762749).

Almost surely, 2^2991525497 is an apocalyptic number.

It is an amenable number.

2991525497 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991525497 is an equidigital number, since it uses as much as digits as its factorization.

2991525497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 53.

The square root of 2991525497 is about 54694.8397657402. The cubic root of 2991525497 is about 1440.8902508509.

The spelling of 2991525497 in words is "two billion, nine hundred ninety-one million, five hundred twenty-five thousand, four hundred ninety-seven".