151155481 has 2 divisors, whose sum is σ = 151155482. Its totient is φ = 151155480.

The previous prime is 151155461. The next prime is 151155491. The reversal of 151155481 is 184551151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150921225 + 234256 = 12285^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 151155481 - 2⁷ = 151155353 is a prime.

It is a super-2 number, since 2×151155481² = 45695958872682722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (151155451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75577740 + 75577741.

It is an arithmetic number, because the mean of its divisors is an integer number (75577741).

Almost surely, 2^151155481 is an apocalyptic number.

It is an amenable number.

151155481 is a deficient number, since it is larger than the sum of its proper divisors (1).

151155481 is an equidigital number, since it uses as much as digits as its factorization.

151155481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4000, while the sum is 31.

The square root of 151155481 is about 12294.5305319073. The cubic root of 151155481 is about 532.6901094074.

The spelling of 151155481 in words is "one hundred fifty-one million, one hundred fifty-five thousand, four hundred eighty-one".