201150091 has 2 divisors, whose sum is σ = 201150092. Its totient is φ = 201150090.

The previous prime is 201150077. The next prime is 201150101. The reversal of 201150091 is 190051102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 201150091 - 2¹¹ = 201148043 is a prime.

It is a super-2 number, since 2×201150091² = 80922718218616562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (201150031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100575045 + 100575046.

It is an arithmetic number, because the mean of its divisors is an integer number (100575046).

Almost surely, 2^201150091 is an apocalyptic number.

201150091 is a deficient number, since it is larger than the sum of its proper divisors (1).

201150091 is an equidigital number, since it uses as much as digits as its factorization.

201150091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 201150091 is about 14182.7391924127. The cubic root of 201150091 is about 585.9223679615.

The spelling of 201150091 in words is "two hundred one million, one hundred fifty thousand, ninety-one".