151465981 has 2 divisors, whose sum is σ = 151465982. Its totient is φ = 151465980.

The previous prime is 151465973. The next prime is 151465987. The reversal of 151465981 is 189564151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126765081 + 24700900 = 11259^2 + 4970^2 .

It is a cyclic number.

It is not a de Polignac number, because 151465981 - 2³ = 151465973 is a prime.

It is a super-2 number, since 2×151465981² = 45883886800584722, 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 (151465987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75732990 + 75732991.

It is an arithmetic number, because the mean of its divisors is an integer number (75732991).

Almost surely, 2^151465981 is an apocalyptic number.

It is an amenable number.

151465981 is a deficient number, since it is larger than the sum of its proper divisors (1).

151465981 is an equidigital number, since it uses as much as digits as its factorization.

151465981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 40.

The square root of 151465981 is about 12307.1516200947. The cubic root of 151465981 is about 533.0546063990.

The spelling of 151465981 in words is "one hundred fifty-one million, four hundred sixty-five thousand, nine hundred eighty-one".