156256241 has 2 divisors, whose sum is σ = 156256242. Its totient is φ = 156256240.

The previous prime is 156256237. The next prime is 156256259. The reversal of 156256241 is 142652651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156250000 + 6241 = 12500^2 + 79^2 .

It is an emirp because it is prime and its reverse (142652651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156256241 - 2² = 156256237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 156256198 and 156256207.

It is not a weakly prime, because it can be changed into another prime (156256271) 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, 78128120 + 78128121.

It is an arithmetic number, because the mean of its divisors is an integer number (78128121).

Almost surely, 2^156256241 is an apocalyptic number.

It is an amenable number.

156256241 is a deficient number, since it is larger than the sum of its proper divisors (1).

156256241 is an equidigital number, since it uses as much as digits as its factorization.

156256241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 32.

The square root of 156256241 is about 12500.2496375072. The cubic root of 156256241 is about 538.6158435202.

It can be divided in two parts, 15625 and 6241, that multiplied together give a square (97515625 = 9875²).

The spelling of 156256241 in words is "one hundred fifty-six million, two hundred fifty-six thousand, two hundred forty-one".