53440363 has 4 divisors (see below), whose sum is σ = 54577440. Its totient is φ = 52303288.

The previous prime is 53440337. The next prime is 53440391. The reversal of 53440363 is 36304435.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53440363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53440393) 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, 568468 + ... + 568561.

It is an arithmetic number, because the mean of its divisors is an integer number (13644360).

Almost surely, 2^53440363 is an apocalyptic number.

53440363 is a deficient number, since it is larger than the sum of its proper divisors (1137077).

53440363 is a wasteful number, since it uses less digits than its factorization.

53440363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137076.

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 53440363 is about 7310.2915810520. The cubic root of 53440363 is about 376.6660402353. Note that the first 3 decimals are identical.

Adding to 53440363 its reverse (36304435), we get a palindrome (89744798).

The spelling of 53440363 in words is "fifty-three million, four hundred forty thousand, three hundred sixty-three".