151662281 has 2 divisors, whose sum is σ = 151662282. Its totient is φ = 151662280.

The previous prime is 151662227. The next prime is 151662283. The reversal of 151662281 is 182266151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150896656 + 765625 = 12284^2 + 875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151662281 is a prime.

It is a super-2 number, since 2×151662281² = 46002894956245922, which contains 22 as substring.

Together with 151662283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (151662283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75831140 + 75831141.

It is an arithmetic number, because the mean of its divisors is an integer number (75831141).

Almost surely, 2^151662281 is an apocalyptic number.

It is an amenable number.

151662281 is a deficient number, since it is larger than the sum of its proper divisors (1).

151662281 is an equidigital number, since it uses as much as digits as its factorization.

151662281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 151662281 is about 12315.1240757046. The cubic root of 151662281 is about 533.2847866836.

The spelling of 151662281 in words is "one hundred fifty-one million, six hundred sixty-two thousand, two hundred eighty-one".