53306431 has 4 divisors (see below), whose sum is σ = 53412912. Its totient is φ = 53199952.

The previous prime is 53306417. The next prime is 53306443. The reversal of 53306431 is 13460335.

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 53306431 - 2⁵ = 53306399 is a prime.

It is a super-2 number, since 2×53306431² = 5683151171915522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53306396 and 53306405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53306401) 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, 52486 + ... + 53491.

It is an arithmetic number, because the mean of its divisors is an integer number (13353228).

Almost surely, 2^53306431 is an apocalyptic number.

53306431 is a deficient number, since it is larger than the sum of its proper divisors (106481).

53306431 is a wasteful number, since it uses less digits than its factorization.

53306431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106480.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 53306431 is about 7301.1253242223. The cubic root of 53306431 is about 376.3511107455.

Adding to 53306431 its reverse (13460335), we get a palindrome (66766766).

The spelling of 53306431 in words is "fifty-three million, three hundred six thousand, four hundred thirty-one".