155131147 has 2 divisors, whose sum is σ = 155131148. Its totient is φ = 155131146.

The previous prime is 155131133. The next prime is 155131153. The reversal of 155131147 is 741131551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155131147 - 2⁷ = 155131019 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155131127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77565573 + 77565574.

It is an arithmetic number, because the mean of its divisors is an integer number (77565574).

Almost surely, 2^155131147 is an apocalyptic number.

155131147 is a deficient number, since it is larger than the sum of its proper divisors (1).

155131147 is an equidigital number, since it uses as much as digits as its factorization.

155131147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 28.

The square root of 155131147 is about 12455.1654746133. The cubic root of 155131147 is about 537.3199939511.

Adding to 155131147 its reverse (741131551), we get a palindrome (896262698).

The spelling of 155131147 in words is "one hundred fifty-five million, one hundred thirty-one thousand, one hundred forty-seven".