155133061 has 2 divisors, whose sum is σ = 155133062. Its totient is φ = 155133060.

The previous prime is 155133049. The next prime is 155133101. The reversal of 155133061 is 160331551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117310561 + 37822500 = 10831^2 + 6150^2 .

It is a cyclic number.

It is not a de Polignac number, because 155133061 - 2¹¹ = 155131013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155133661) 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, 77566530 + 77566531.

It is an arithmetic number, because the mean of its divisors is an integer number (77566531).

Almost surely, 2^155133061 is an apocalyptic number.

It is an amenable number.

155133061 is a deficient number, since it is larger than the sum of its proper divisors (1).

155133061 is an equidigital number, since it uses as much as digits as its factorization.

155133061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 155133061 is about 12455.2423099673. The cubic root of 155133061 is about 537.3222037507.

The spelling of 155133061 in words is "one hundred fifty-five million, one hundred thirty-three thousand, sixty-one".