155050057 has 2 divisors, whose sum is σ = 155050058. Its totient is φ = 155050056.

The previous prime is 155050009. The next prime is 155050067. The reversal of 155050057 is 750050551.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88284816 + 66765241 = 9396^2 + 8171^2 .

It is a cyclic number.

It is not a de Polignac number, because 155050057 - 2⁷ = 155049929 is a prime.

It is not a weakly prime, because it can be changed into another prime (155050067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77525028 + 77525029.

It is an arithmetic number, because the mean of its divisors is an integer number (77525029).

Almost surely, 2^155050057 is an apocalyptic number.

It is an amenable number.

155050057 is a deficient number, since it is larger than the sum of its proper divisors (1).

155050057 is an equidigital number, since it uses as much as digits as its factorization.

155050057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 155050057 is about 12451.9097732035. The cubic root of 155050057 is about 537.2263551747.

The spelling of 155050057 in words is "one hundred fifty-five million, fifty thousand, fifty-seven".