4248722557 has 2 divisors, whose sum is σ = 4248722558. Its totient is φ = 4248722556.

The previous prime is 4248722519. The next prime is 4248722579. The reversal of 4248722557 is 7552278424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4231632601 + 17089956 = 65051^2 + 4134^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4248722557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4248722957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2124361278 + 2124361279.

It is an arithmetic number, because the mean of its divisors is an integer number (2124361279).

Almost surely, 2^4248722557 is an apocalyptic number.

It is an amenable number.

4248722557 is a deficient number, since it is larger than the sum of its proper divisors (1).

4248722557 is an equidigital number, since it uses as much as digits as its factorization.

4248722557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1254400, while the sum is 46.

The square root of 4248722557 is about 65182.2257751298. The cubic root of 4248722557 is about 1619.6435934183.

The spelling of 4248722557 in words is "four billion, two hundred forty-eight million, seven hundred twenty-two thousand, five hundred fifty-seven".