1001061157 has 2 divisors, whose sum is σ = 1001061158. Its totient is φ = 1001061156.

The previous prime is 1001061109. The next prime is 1001061161. The reversal of 1001061157 is 7511601001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535968801 + 465092356 = 23151^2 + 21566^2 .

It is an emirp because it is prime and its reverse (7511601001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001061157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001061107) 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, 500530578 + 500530579.

It is an arithmetic number, because the mean of its divisors is an integer number (500530579).

Almost surely, 2^1001061157 is an apocalyptic number.

It is an amenable number.

1001061157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001061157 is an equidigital number, since it uses as much as digits as its factorization.

1001061157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 210, while the sum is 22.

The square root of 1001061157 is about 31639.5505182991. The cubic root of 1001061157 is about 1000.3535939566.

Adding to 1001061157 its reverse (7511601001), we get a palindrome (8512662158).

The spelling of 1001061157 in words is "one billion, one million, sixty-one thousand, one hundred fifty-seven".