53403343 has 8 divisors (see below), whose sum is σ = 61100960. Its totient is φ = 45722880.

The previous prime is 53403331. The next prime is 53403391. The reversal of 53403343 is 34330435.

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

It is not a de Polignac number, because 53403343 - 2¹³ = 53395151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53403323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3283 + ... + 10843.

It is an arithmetic number, because the mean of its divisors is an integer number (7637620).

Almost surely, 2^53403343 is an apocalyptic number.

53403343 is a deficient number, since it is larger than the sum of its proper divisors (7697617).

53403343 is a wasteful number, since it uses less digits than its factorization.

53403343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8577.

The product of its (nonzero) digits is 6480, while the sum is 25.

The square root of 53403343 is about 7307.7590956462. The cubic root of 53403343 is about 376.5790435837.

Adding to 53403343 its reverse (34330435), we get a palindrome (87733778).

The spelling of 53403343 in words is "fifty-three million, four hundred three thousand, three hundred forty-three".