151191 has 12 divisors (see below), whose sum is σ = 221832. Its totient is φ = 99216.

The previous prime is 151189. The next prime is 151201. The reversal of 151191 is 191151.

It is not a de Polignac number, because 151191 - 2¹ = 151189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 885 + ... + 1041.

It is an arithmetic number, because the mean of its divisors is an integer number (18486).

2¹⁵¹¹⁹¹ is an apocalyptic number.

151191 is a deficient number, since it is larger than the sum of its proper divisors (70641).

151191 is a wasteful number, since it uses less digits than its factorization.

151191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 267 counting only the distinct ones).

The product of its digits is 45, while the sum is 18.

The square root of 151191 is about 388.8328689810. The cubic root of 151191 is about 53.2731830550.

The spelling of 151191 in words is "one hundred fifty-one thousand, one hundred ninety-one".