155235053 has 2 divisors, whose sum is σ = 155235054. Its totient is φ = 155235052.

The previous prime is 155235049. The next prime is 155235071. The reversal of 155235053 is 350532551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149866564 + 5368489 = 12242^2 + 2317^2 .

It is a cyclic number.

It is not a de Polignac number, because 155235053 - 2² = 155235049 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155235013) 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, 77617526 + 77617527.

It is an arithmetic number, because the mean of its divisors is an integer number (77617527).

Almost surely, 2^155235053 is an apocalyptic number.

It is an amenable number.

155235053 is a deficient number, since it is larger than the sum of its proper divisors (1).

155235053 is an equidigital number, since it uses as much as digits as its factorization.

155235053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 155235053 is about 12459.3359774909. The cubic root of 155235053 is about 537.4399318487.

The spelling of 155235053 in words is "one hundred fifty-five million, two hundred thirty-five thousand, fifty-three".