253500543 has 16 divisors (see below), whose sum is σ = 375804160. Its totient is φ = 168888888.

The previous prime is 253500539. The next prime is 253500557. The reversal of 253500543 is 345005352.

It is not a de Polignac number, because 253500543 - 2² = 253500539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253550543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69696 + ... + 73242.

It is an arithmetic number, because the mean of its divisors is an integer number (23487760).

Almost surely, 2^253500543 is an apocalyptic number.

253500543 is a deficient number, since it is larger than the sum of its proper divisors (122303617).

253500543 is a wasteful number, since it uses less digits than its factorization.

253500543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6203 (or 6197 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 253500543 is about 15921.7003802986. The cubic root of 253500543 is about 632.8871791921.

Adding to 253500543 its reverse (345005352), we get a palindrome (598505895).

The spelling of 253500543 in words is "two hundred fifty-three million, five hundred thousand, five hundred forty-three".