53400503 has 8 divisors (see below), whose sum is σ = 60008928. Its totient is φ = 47149344.

The previous prime is 53400499. The next prime is 53400547. The reversal of 53400503 is 30500435.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53400503 - 2² = 53400499 is a prime.

It is a super-2 number, since 2×53400503² = 5703227441306018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53400563) 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 7 ways as a sum of consecutive naturals, for example, 89000 + ... + 89597.

It is an arithmetic number, because the mean of its divisors is an integer number (7501116).

Almost surely, 2^53400503 is an apocalyptic number.

53400503 is a deficient number, since it is larger than the sum of its proper divisors (6608425).

53400503 is a wasteful number, since it uses less digits than its factorization.

53400503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178633.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 53400503 is about 7307.5647790492. The cubic root of 53400503 is about 376.5723679502.

Adding to 53400503 its reverse (30500435), we get a palindrome (83900938).

The spelling of 53400503 in words is "fifty-three million, four hundred thousand, five hundred three".