151550561 has 2 divisors, whose sum is σ = 151550562. Its totient is φ = 151550560.

The previous prime is 151550551. The next prime is 151550591. The reversal of 151550561 is 165055151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87310336 + 64240225 = 9344^2 + 8015^2 .

It is an emirp because it is prime and its reverse (165055151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 151550561 - 2²⁶ = 84441697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (151550551) 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, 75775280 + 75775281.

It is an arithmetic number, because the mean of its divisors is an integer number (75775281).

Almost surely, 2^151550561 is an apocalyptic number.

It is an amenable number.

151550561 is a deficient number, since it is larger than the sum of its proper divisors (1).

151550561 is an equidigital number, since it uses as much as digits as its factorization.

151550561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3750, while the sum is 29.

The square root of 151550561 is about 12310.5873539811. The cubic root of 151550561 is about 533.1538088047.

The spelling of 151550561 in words is "one hundred fifty-one million, five hundred fifty thousand, five hundred sixty-one".