153145503 has 24 divisors (see below), whose sum is σ = 267684768. Its totient is φ = 82363392.

The previous prime is 153145457. The next prime is 153145507. The reversal of 153145503 is 305541351.

153145503 is a `hidden beast` number, since 15 + 3 + 145 + 503 = 666.

It is not a de Polignac number, because 153145503 - 2⁶ = 153145439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153145507) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70426 + ... + 72567.

It is an arithmetic number, because the mean of its divisors is an integer number (11153532).

Almost surely, 2^153145503 is an apocalyptic number.

153145503 is a deficient number, since it is larger than the sum of its proper divisors (114539265).

153145503 is a wasteful number, since it uses less digits than its factorization.

153145503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143023 (or 143020 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 153145503 is about 12375.1970893396. The cubic root of 153145503 is about 535.0176172613.

Adding to 153145503 its reverse (305541351), we get a palindrome (458686854).

The spelling of 153145503 in words is "one hundred fifty-three million, one hundred forty-five thousand, five hundred three".