7454447557 has 2 divisors, whose sum is σ = 7454447558. Its totient is φ = 7454447556.

The previous prime is 7454447443. The next prime is 7454447563. The reversal of 7454447557 is 7557444547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3883907041 + 3570540516 = 62321^2 + 59754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7454447557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7454447597) 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, 3727223778 + 3727223779.

It is an arithmetic number, because the mean of its divisors is an integer number (3727223779).

Almost surely, 2^7454447557 is an apocalyptic number.

It is an amenable number.

7454447557 is a deficient number, since it is larger than the sum of its proper divisors (1).

7454447557 is an equidigital number, since it uses as much as digits as its factorization.

7454447557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10976000, while the sum is 52.

The square root of 7454447557 is about 86339.1426700544. The cubic root of 7454447557 is about 1953.4628416859.

The spelling of 7454447557 in words is "seven billion, four hundred fifty-four million, four hundred forty-seven thousand, five hundred fifty-seven".