53431253 has 6 divisors (see below), whose sum is σ = 55338114. Its totient is φ = 51587984.

The previous prime is 53431247. The next prime is 53431297. The reversal of 53431253 is 35213435.

It can be written as a sum of positive squares in 3 ways, for example, as 11142244 + 42289009 = 3338^2 + 6503^2 .

It is not a de Polignac number, because 53431253 - 2¹⁰ = 53430229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53431243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30926 + ... + 32607.

It is an arithmetic number, because the mean of its divisors is an integer number (9223019).

Almost surely, 2^53431253 is an apocalyptic number.

It is an amenable number.

53431253 is a deficient number, since it is larger than the sum of its proper divisors (1906861).

53431253 is an equidigital number, since it uses as much as digits as its factorization.

53431253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63591 (or 63562 counting only the distinct ones).

The product of its digits is 5400, while the sum is 26.

The square root of 53431253 is about 7309.6684603339. The cubic root of 53431253 is about 376.6446355489.

Adding to 53431253 its reverse (35213435), we get a palindrome (88644688).

The spelling of 53431253 in words is "fifty-three million, four hundred thirty-one thousand, two hundred fifty-three".