151091 has 2 divisors, whose sum is σ = 151092. Its totient is φ = 151090.

The previous prime is 151057. The next prime is 151121. The reversal of 151091 is 190151.

It is a happy number.

151091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151091 - 2⁶ = 151027 is a prime.

It is a Chen prime.

It is a zygodrome in base 7.

It is not a weakly prime, because it can be changed into another prime (151051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75545 + 75546.

It is an arithmetic number, because the mean of its divisors is an integer number (75546).

2¹⁵¹⁰⁹¹ is an apocalyptic number.

151091 is a deficient number, since it is larger than the sum of its proper divisors (1).

151091 is an equidigital number, since it uses as much as digits as its factorization.

151091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45, while the sum is 17.

The square root of 151091 is about 388.7042577590. The cubic root of 151091 is about 53.2614352366.

Subtracting 151091 from its reverse (190151), we obtain a triangular number (39060 = T₂₇₉).

The spelling of 151091 in words is "one hundred fifty-one thousand, ninety-one".