53431003 has 4 divisors (see below), whose sum is σ = 53446680. Its totient is φ = 53415328.

The previous prime is 53430991. The next prime is 53431009. The reversal of 53431003 is 30013435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53431003 - 2¹⁷ = 53299931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53431009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325 + ... + 10342.

It is an arithmetic number, because the mean of its divisors is an integer number (13361670).

Almost surely, 2^53431003 is an apocalyptic number.

53431003 is a deficient number, since it is larger than the sum of its proper divisors (15677).

53431003 is a wasteful number, since it uses less digits than its factorization.

53431003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15676.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 53431003 is about 7309.6513596751. The cubic root of 53431003 is about 376.6440481193.

Adding to 53431003 its reverse (30013435), we get a palindrome (83444438).

It can be divided in two parts, 53 and 431003, that added together give a triangular number (431056 = T₉₂₈).

The spelling of 53431003 in words is "fifty-three million, four hundred thirty-one thousand, three".