155600057 has 2 divisors, whose sum is σ = 155600058. Its totient is φ = 155600056.

The previous prime is 155600047. The next prime is 155600069. The reversal of 155600057 is 750006551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144384256 + 11215801 = 12016^2 + 3349^2 .

It is a cyclic number.

It is not a de Polignac number, because 155600057 - 2¹⁰ = 155599033 is a prime.

It is a super-2 number, since 2×155600057² = 48422755476806498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155600047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77800028 + 77800029.

It is an arithmetic number, because the mean of its divisors is an integer number (77800029).

Almost surely, 2^155600057 is an apocalyptic number.

It is an amenable number.

155600057 is a deficient number, since it is larger than the sum of its proper divisors (1).

155600057 is an equidigital number, since it uses as much as digits as its factorization.

155600057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 155600057 is about 12473.9751883672. The cubic root of 155600057 is about 537.8608294316.

The spelling of 155600057 in words is "one hundred fifty-five million, six hundred thousand, fifty-seven".