2071500091 has 2 divisors, whose sum is σ = 2071500092. Its totient is φ = 2071500090.

The previous prime is 2071499981. The next prime is 2071500149. The reversal of 2071500091 is 1900051702.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2071500091 - 2¹³ = 2071491899 is a prime.

It is a super-2 number, since 2×2071500091² = 8582225254026016562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2071500191) 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, 1035750045 + 1035750046.

It is an arithmetic number, because the mean of its divisors is an integer number (1035750046).

Almost surely, 2^2071500091 is an apocalyptic number.

2071500091 is a deficient number, since it is larger than the sum of its proper divisors (1).

2071500091 is an equidigital number, since it uses as much as digits as its factorization.

2071500091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 25.

The square root of 2071500091 is about 45513.7351905993. The cubic root of 2071500091 is about 1274.7596811704.

Adding to 2071500091 its reverse (1900051702), we get a palindrome (3971551793).

The spelling of 2071500091 in words is "two billion, seventy-one million, five hundred thousand, ninety-one".