155350057 has 2 divisors, whose sum is σ = 155350058. Its totient is φ = 155350056.

The previous prime is 155350043. The next prime is 155350081. The reversal of 155350057 is 750053551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153859216 + 1490841 = 12404^2 + 1221^2 .

It is a cyclic number.

It is not a de Polignac number, because 155350057 - 2¹⁵ = 155317289 is a prime.

It is not a weakly prime, because it can be changed into another prime (155350157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77675028 + 77675029.

It is an arithmetic number, because the mean of its divisors is an integer number (77675029).

Almost surely, 2^155350057 is an apocalyptic number.

It is an amenable number.

155350057 is a deficient number, since it is larger than the sum of its proper divisors (1).

155350057 is an equidigital number, since it uses as much as digits as its factorization.

155350057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13125, while the sum is 31.

The square root of 155350057 is about 12463.9502967558. The cubic root of 155350057 is about 537.5726176991.

The spelling of 155350057 in words is "one hundred fifty-five million, three hundred fifty thousand, fifty-seven".