159121951 has 2 divisors, whose sum is σ = 159121952. Its totient is φ = 159121950.

The previous prime is 159121913. The next prime is 159121957.

159121951 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 159121951 - 2²¹ = 157024799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159121957) 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, 79560975 + 79560976.

It is an arithmetic number, because the mean of its divisors is an integer number (79560976).

Almost surely, 2^159121951 is an apocalyptic number.

159121951 is a deficient number, since it is larger than the sum of its proper divisors (1).

159121951 is an equidigital number, since it uses as much as digits as its factorization.

159121951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4050, while the sum is 34.

The square root of 159121951 is about 12614.3549577456. The cubic root of 159121951 is about 541.8886212861. Note that the first 3 decimals are identical.

The spelling of 159121951 in words is "one hundred fifty-nine million, one hundred twenty-one thousand, nine hundred fifty-one".