155147441 has 2 divisors, whose sum is σ = 155147442. Its totient is φ = 155147440.

The previous prime is 155147437. The next prime is 155147449. The reversal of 155147441 is 144741551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153859216 + 1288225 = 12404^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 155147441 - 2² = 155147437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 155147398 and 155147407.

It is not a weakly prime, because it can be changed into another prime (155147449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77573720 + 77573721.

It is an arithmetic number, because the mean of its divisors is an integer number (77573721).

Almost surely, 2^155147441 is an apocalyptic number.

It is an amenable number.

155147441 is a deficient number, since it is larger than the sum of its proper divisors (1).

155147441 is an equidigital number, since it uses as much as digits as its factorization.

155147441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11200, while the sum is 32.

The square root of 155147441 is about 12455.8195635614. The cubic root of 155147441 is about 537.3388055301.

Adding to 155147441 its reverse (144741551), we get a palindrome (299888992).

The spelling of 155147441 in words is "one hundred fifty-five million, one hundred forty-seven thousand, four hundred forty-one".