151531649 has 2 divisors, whose sum is σ = 151531650. Its totient is φ = 151531648.

The previous prime is 151531621. The next prime is 151531651. The reversal of 151531649 is 946135151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91546624 + 59985025 = 9568^2 + 7745^2 .

It is a cyclic number.

It is not a de Polignac number, because 151531649 - 2¹² = 151527553 is a prime.

Together with 151531651, 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 (151531609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75765824 + 75765825.

It is an arithmetic number, because the mean of its divisors is an integer number (75765825).

Almost surely, 2^151531649 is an apocalyptic number.

It is an amenable number.

151531649 is a deficient number, since it is larger than the sum of its proper divisors (1).

151531649 is an equidigital number, since it uses as much as digits as its factorization.

151531649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 35.

The square root of 151531649 is about 12309.8192106952. The cubic root of 151531649 is about 533.1316304545.

The spelling of 151531649 in words is "one hundred fifty-one million, five hundred thirty-one thousand, six hundred forty-nine".