155847641 has 2 divisors, whose sum is σ = 155847642. Its totient is φ = 155847640.

The previous prime is 155847611. The next prime is 155847647. The reversal of 155847641 is 146748551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98406400 + 57441241 = 9920^2 + 7579^2 .

It is a cyclic number.

It is not a de Polignac number, because 155847641 - 2⁶ = 155847577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155847647) 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, 77923820 + 77923821.

It is an arithmetic number, because the mean of its divisors is an integer number (77923821).

Almost surely, 2^155847641 is an apocalyptic number.

It is an amenable number.

155847641 is a deficient number, since it is larger than the sum of its proper divisors (1).

155847641 is an equidigital number, since it uses as much as digits as its factorization.

155847641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 41.

The square root of 155847641 is about 12483.8952655011. The cubic root of 155847641 is about 538.1459517968.

The spelling of 155847641 in words is "one hundred fifty-five million, eight hundred forty-seven thousand, six hundred forty-one".