155163457 has 2 divisors, whose sum is σ = 155163458. Its totient is φ = 155163456.

The previous prime is 155163419. The next prime is 155163461. The reversal of 155163457 is 754361551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128165041 + 26998416 = 11321^2 + 5196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155163457 is a prime.

It is not a weakly prime, because it can be changed into another prime (155163487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77581728 + 77581729.

It is an arithmetic number, because the mean of its divisors is an integer number (77581729).

Almost surely, 2^155163457 is an apocalyptic number.

It is an amenable number.

155163457 is a deficient number, since it is larger than the sum of its proper divisors (1).

155163457 is an equidigital number, since it uses as much as digits as its factorization.

155163457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63000, while the sum is 37.

The square root of 155163457 is about 12456.4624593020. The cubic root of 155163457 is about 537.3572948719.

The spelling of 155163457 in words is "one hundred fifty-five million, one hundred sixty-three thousand, four hundred fifty-seven".