151132181 has 2 divisors, whose sum is σ = 151132182. Its totient is φ = 151132180.

The previous prime is 151132153. The next prime is 151132207. The reversal of 151132181 is 181231151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93508900 + 57623281 = 9670^2 + 7591^2 .

It is an emirp because it is prime and its reverse (181231151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151132181 - 2⁶ = 151132117 is a prime.

It is a super-2 number, since 2×151132181² = 45681872267633522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151132081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75566090 + 75566091.

It is an arithmetic number, because the mean of its divisors is an integer number (75566091).

Almost surely, 2^151132181 is an apocalyptic number.

It is an amenable number.

151132181 is a deficient number, since it is larger than the sum of its proper divisors (1).

151132181 is an equidigital number, since it uses as much as digits as its factorization.

151132181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 23.

The square root of 151132181 is about 12293.5829195560. The cubic root of 151132181 is about 532.6627373327.

The spelling of 151132181 in words is "one hundred fifty-one million, one hundred thirty-two thousand, one hundred eighty-one".