1245475547 has 2 divisors, whose sum is σ = 1245475548. Its totient is φ = 1245475546.

The previous prime is 1245475531. The next prime is 1245475549. The reversal of 1245475547 is 7455745421.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1245475547 - 2⁴ = 1245475531 is a prime.

Together with 1245475549, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1245475498 and 1245475507.

It is not a weakly prime, because it can be changed into another prime (1245475549) 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, 622737773 + 622737774.

It is an arithmetic number, because the mean of its divisors is an integer number (622737774).

Almost surely, 2^1245475547 is an apocalyptic number.

1245475547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245475547 is an equidigital number, since it uses as much as digits as its factorization.

1245475547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 784000, while the sum is 44.

The square root of 1245475547 is about 35291.2956265422. The cubic root of 1245475547 is about 1075.9160886250.

The spelling of 1245475547 in words is "one billion, two hundred forty-five million, four hundred seventy-five thousand, five hundred forty-seven".