155197741 has 2 divisors, whose sum is σ = 155197742. Its totient is φ = 155197740.

The previous prime is 155197729. The next prime is 155197747. The reversal of 155197741 is 147791551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154629225 + 568516 = 12435^2 + 754^2 .

It is a cyclic number.

It is not a de Polignac number, because 155197741 - 2⁷ = 155197613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155197694 and 155197703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155197747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77598870 + 77598871.

It is an arithmetic number, because the mean of its divisors is an integer number (77598871).

Almost surely, 2^155197741 is an apocalyptic number.

It is an amenable number.

155197741 is a deficient number, since it is larger than the sum of its proper divisors (1).

155197741 is an equidigital number, since it uses as much as digits as its factorization.

155197741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 44100, while the sum is 40.

The square root of 155197741 is about 12457.8385364396. The cubic root of 155197741 is about 537.3968690542.

The spelling of 155197741 in words is "one hundred fifty-five million, one hundred ninety-seven thousand, seven hundred forty-one".