153123503 has 4 divisors (see below), whose sum is σ = 164902248. Its totient is φ = 141344760.

The previous prime is 153123497. The next prime is 153123533. The reversal of 153123503 is 305321351.

153123503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 153123503 - 2¹⁰ = 153122479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153123533) 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, 5889353 + ... + 5889378.

It is an arithmetic number, because the mean of its divisors is an integer number (41225562).

Almost surely, 2^153123503 is an apocalyptic number.

153123503 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

153123503 is a deficient number, since it is larger than the sum of its proper divisors (11778745).

153123503 is a wasteful number, since it uses less digits than its factorization.

153123503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11778744.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 153123503 is about 12374.3081826824. The cubic root of 153123503 is about 534.9919968524.

Adding to 153123503 its reverse (305321351), we get a palindrome (458444854).

The spelling of 153123503 in words is "one hundred fifty-three million, one hundred twenty-three thousand, five hundred three".