7227730157 has 2 divisors, whose sum is σ = 7227730158. Its totient is φ = 7227730156.

The previous prime is 7227730099. The next prime is 7227730187. The reversal of 7227730157 is 7510377227.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6806085001 + 421645156 = 82499^2 + 20534^2 .

It is an emirp because it is prime and its reverse (7510377227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7227730157 - 2¹⁰ = 7227729133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7227730187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3613865078 + 3613865079.

It is an arithmetic number, because the mean of its divisors is an integer number (3613865079).

Almost surely, 2^7227730157 is an apocalyptic number.

It is an amenable number.

7227730157 is a deficient number, since it is larger than the sum of its proper divisors (1).

7227730157 is an equidigital number, since it uses as much as digits as its factorization.

7227730157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144060, while the sum is 41.

The square root of 7227730157 is about 85016.0582301955. The cubic root of 7227730157 is about 1933.4545908852.

The spelling of 7227730157 in words is "seven billion, two hundred twenty-seven million, seven hundred thirty thousand, one hundred fifty-seven".