7057447157 has 2 divisors, whose sum is σ = 7057447158. Its totient is φ = 7057447156.

The previous prime is 7057447129. The next prime is 7057447171. The reversal of 7057447157 is 7517447507.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6337115236 + 720331921 = 79606^2 + 26839^2 .

It is an emirp because it is prime and its reverse (7517447507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7057447157 - 2⁸ = 7057446901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7057447127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3528723578 + 3528723579.

It is an arithmetic number, because the mean of its divisors is an integer number (3528723579).

Almost surely, 2^7057447157 is an apocalyptic number.

It is an amenable number.

7057447157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7057447157 is an equidigital number, since it uses as much as digits as its factorization.

7057447157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960400, while the sum is 47.

The square root of 7057447157 is about 84008.6135881315. The cubic root of 7057447157 is about 1918.1499066608.

The spelling of 7057447157 in words is "seven billion, fifty-seven million, four hundred forty-seven thousand, one hundred fifty-seven".