53304431 has 4 divisors (see below), whose sum is σ = 53382264. Its totient is φ = 53226600.

The previous prime is 53304421. The next prime is 53304487. The reversal of 53304431 is 13440335.

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 53304431 - 2¹⁸ = 53042287 is a prime.

It is a super-2 number, since 2×53304431² = 5682724728467522, 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 = 53304397 and 53304406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53304421) 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, 37880 + ... + 39261.

It is an arithmetic number, because the mean of its divisors is an integer number (13345566).

Almost surely, 2^53304431 is an apocalyptic number.

53304431 is a deficient number, since it is larger than the sum of its proper divisors (77833).

53304431 is an equidigital number, since it uses as much as digits as its factorization.

53304431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77832.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 53304431 is about 7300.9883577499. The cubic root of 53304431 is about 376.3464039236.

Adding to 53304431 its reverse (13440335), we get a palindrome (66744766).

It can be divided in two parts, 53304 and 431, that added together give a palindrome (53735).

The spelling of 53304431 in words is "fifty-three million, three hundred four thousand, four hundred thirty-one".