155241503 has 2 divisors, whose sum is σ = 155241504. Its totient is φ = 155241502.

The previous prime is 155241491. The next prime is 155241551. The reversal of 155241503 is 305142551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155241503 - 2⁴ = 155241487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155241103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77620751 + 77620752.

It is an arithmetic number, because the mean of its divisors is an integer number (77620752).

Almost surely, 2^155241503 is an apocalyptic number.

155241503 is a deficient number, since it is larger than the sum of its proper divisors (1).

155241503 is an equidigital number, since it uses as much as digits as its factorization.

155241503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 155241503 is about 12459.5948168470. The cubic root of 155241503 is about 537.4473752697.

The spelling of 155241503 in words is "one hundred fifty-five million, two hundred forty-one thousand, five hundred three".