155603053 has 2 divisors, whose sum is σ = 155603054. Its totient is φ = 155603052.

The previous prime is 155603017. The next prime is 155603069. The reversal of 155603053 is 350306551.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78110244 + 77492809 = 8838^2 + 8803^2 .

It is a cyclic number.

It is not a de Polignac number, because 155603053 - 2¹³ = 155594861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155603153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77801526 + 77801527.

It is an arithmetic number, because the mean of its divisors is an integer number (77801527).

Almost surely, 2^155603053 is an apocalyptic number.

It is an amenable number.

155603053 is a deficient number, since it is larger than the sum of its proper divisors (1).

155603053 is an equidigital number, since it uses as much as digits as its factorization.

155603053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 155603053 is about 12474.0952778147. The cubic root of 155603053 is about 537.8642814884.

The spelling of 155603053 in words is "one hundred fifty-five million, six hundred three thousand, fifty-three".