151155181 has 2 divisors, whose sum is σ = 151155182. Its totient is φ = 151155180.

The previous prime is 151155167. The next prime is 151155209. The reversal of 151155181 is 181551151.

It is an a-pointer prime, because the next prime (151155209) can be obtained adding 151155181 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119006281 + 32148900 = 10909^2 + 5670^2 .

It is an emirp because it is prime and its reverse (181551151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151155181 - 2²¹ = 149058029 is a prime.

It is a super-2 number, since 2×151155181² = 45695777486285522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151155161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75577590 + 75577591.

It is an arithmetic number, because the mean of its divisors is an integer number (75577591).

Almost surely, 2^151155181 is an apocalyptic number.

It is an amenable number.

151155181 is a deficient number, since it is larger than the sum of its proper divisors (1).

151155181 is an equidigital number, since it uses as much as digits as its factorization.

151155181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000, while the sum is 28.

The square root of 151155181 is about 12294.5183313540. The cubic root of 151155181 is about 532.6897569951.

The spelling of 151155181 in words is "one hundred fifty-one million, one hundred fifty-five thousand, one hundred eighty-one".