1245528113 has 2 divisors, whose sum is σ = 1245528114. Its totient is φ = 1245528112.

The previous prime is 1245528091. The next prime is 1245528121. The reversal of 1245528113 is 3118255421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819848689 + 425679424 = 28633^2 + 20632^2 .

It is a cyclic number.

It is not a de Polignac number, because 1245528113 - 2⁶ = 1245528049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1245528113.

It is not a weakly prime, because it can be changed into another prime (1245528133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622764056 + 622764057.

It is an arithmetic number, because the mean of its divisors is an integer number (622764057).

Almost surely, 2^1245528113 is an apocalyptic number.

It is an amenable number.

1245528113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245528113 is an equidigital number, since it uses as much as digits as its factorization.

1245528113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 32.

The square root of 1245528113 is about 35292.0403632320. The cubic root of 1245528113 is about 1075.9312249612.

The spelling of 1245528113 in words is "one billion, two hundred forty-five million, five hundred twenty-eight thousand, one hundred thirteen".