201503253 has 16 divisors (see below), whose sum is σ = 320403456. Its totient is φ = 110138160.

The previous prime is 201503243. The next prime is 201503347. The reversal of 201503253 is 352305102.

It is not a de Polignac number, because 201503253 - 2⁸ = 201502997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201503243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208113 + ... + 209078.

It is an arithmetic number, because the mean of its divisors is an integer number (20025216).

Almost surely, 2^201503253 is an apocalyptic number.

201503253 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

201503253 is a deficient number, since it is larger than the sum of its proper divisors (118900203).

201503253 is a wasteful number, since it uses less digits than its factorization.

201503253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417224.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 201503253 is about 14195.1841481539. The cubic root of 201503253 is about 586.2650714813.

Adding to 201503253 its reverse (352305102), we get a palindrome (553808355).

The spelling of 201503253 in words is "two hundred one million, five hundred three thousand, two hundred fifty-three".