156255641 has 2 divisors, whose sum is σ = 156255642. Its totient is φ = 156255640.

The previous prime is 156255637. The next prime is 156255661. The reversal of 156255641 is 146552651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156150016 + 105625 = 12496^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 156255641 - 2² = 156255637 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (156255611) 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, 78127820 + 78127821.

It is an arithmetic number, because the mean of its divisors is an integer number (78127821).

Almost surely, 2^156255641 is an apocalyptic number.

It is an amenable number.

156255641 is a deficient number, since it is larger than the sum of its proper divisors (1).

156255641 is an equidigital number, since it uses as much as digits as its factorization.

156255641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 35.

The square root of 156255641 is about 12500.2256379635. The cubic root of 156255641 is about 538.6151541186.

The spelling of 156255641 in words is "one hundred fifty-six million, two hundred fifty-five thousand, six hundred forty-one".