155844131 has 2 divisors, whose sum is σ = 155844132. Its totient is φ = 155844130.

The previous prime is 155844127. The next prime is 155844179. The reversal of 155844131 is 131448551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155844131 - 2² = 155844127 is a prime.

It is a super-2 number, since 2×155844131² = 48574786334290322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155844331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77922065 + 77922066.

It is an arithmetic number, because the mean of its divisors is an integer number (77922066).

Almost surely, 2^155844131 is an apocalyptic number.

155844131 is a deficient number, since it is larger than the sum of its proper divisors (1).

155844131 is an equidigital number, since it uses as much as digits as its factorization.

155844131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 32.

The square root of 155844131 is about 12483.7546835878. The cubic root of 155844131 is about 538.1419117260.

The spelling of 155844131 in words is "one hundred fifty-five million, eight hundred forty-four thousand, one hundred thirty-one".