153903 has 12 divisors (see below), whose sum is σ = 216008. Its totient is φ = 97440.

The previous prime is 153889. The next prime is 153911. The reversal of 153903 is 309351.

153903 is nontrivially palindromic in base 15.

It is not a de Polignac number, because 153903 - 2⁴ = 153887 is a prime.

It is a super-2 number, since 2×153903² = 47372266818, which contains 22 as substring.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

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 153903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2493 + ... + 2553.

2¹⁵³⁹⁰³ is an apocalyptic number.

153903 is a deficient number, since it is larger than the sum of its proper divisors (62105).

153903 is an equidigital number, since it uses as much as digits as its factorization.

153903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 153903 is about 392.3047284956. The cubic root of 153903 is about 53.5898278387.

The spelling of 153903 in words is "one hundred fifty-three thousand, nine hundred three".