53145203 has 16 divisors (see below), whose sum is σ = 57148416. Its totient is φ = 49304640.

The previous prime is 53145187. The next prime is 53145217. The reversal of 53145203 is 30254135.

It is not a de Polignac number, because 53145203 - 2⁴ = 53145187 is a prime.

It is a super-2 number, since 2×53145203² = 5648825203822418, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53145263) 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, 227975 + ... + 228207.

It is an arithmetic number, because the mean of its divisors is an integer number (3571776).

Almost surely, 2^53145203 is an apocalyptic number.

53145203 is a deficient number, since it is larger than the sum of its proper divisors (4003213).

53145203 is a wasteful number, since it uses less digits than its factorization.

53145203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 53145203 is about 7290.0756511850. The cubic root of 53145203 is about 375.9712965677.

Adding to 53145203 its reverse (30254135), we get a palindrome (83399338).

The spelling of 53145203 in words is "fifty-three million, one hundred forty-five thousand, two hundred three".