155148503 has 4 divisors (see below), whose sum is σ = 155189328. Its totient is φ = 155107680.

The previous prime is 155148491. The next prime is 155148517. The reversal of 155148503 is 305841551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305841551 = 15787 ⋅19373.

It is a cyclic number.

It is not a de Polignac number, because 155148503 - 2⁶ = 155148439 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155148503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155148533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14051 + ... + 22532.

It is an arithmetic number, because the mean of its divisors is an integer number (38797332).

Almost surely, 2^155148503 is an apocalyptic number.

155148503 is a deficient number, since it is larger than the sum of its proper divisors (40825).

155148503 is an equidigital number, since it uses as much as digits as its factorization.

155148503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40824.

The product of its (nonzero) digits is 12000, while the sum is 32.

The square root of 155148503 is about 12455.8621941638. The cubic root of 155148503 is about 537.3400315735.

The spelling of 155148503 in words is "one hundred fifty-five million, one hundred forty-eight thousand, five hundred three".