151420561 has 2 divisors, whose sum is σ = 151420562. Its totient is φ = 151420560.

The previous prime is 151420543. The next prime is 151420567. The reversal of 151420561 is 165024151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106998336 + 44422225 = 10344^2 + 6665^2 .

It is a cyclic number.

It is not a de Polignac number, because 151420561 - 2⁷ = 151420433 is a prime.

It is not a weakly prime, because it can be changed into another prime (151420567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75710280 + 75710281.

It is an arithmetic number, because the mean of its divisors is an integer number (75710281).

Almost surely, 2^151420561 is an apocalyptic number.

It is an amenable number.

151420561 is a deficient number, since it is larger than the sum of its proper divisors (1).

151420561 is an equidigital number, since it uses as much as digits as its factorization.

151420561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 151420561 is about 12305.3062131749. The cubic root of 151420561 is about 533.0013188323.

The spelling of 151420561 in words is "one hundred fifty-one million, four hundred twenty thousand, five hundred sixty-one".