53440240533 has 8 divisors (see below), whose sum is σ = 71409571968. Its totient is φ = 35548868064.

The previous prime is 53440240531. The next prime is 53440240543. The reversal of 53440240533 is 33504204435.

It is a happy number.

53440240533 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 53440240533 - 2¹ = 53440240531 is a prime.

It is a super-2 number, since 2×53440240533² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53440240494 and 53440240503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53440240531) 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, 19488141 + ... + 19490882.

It is an arithmetic number, because the mean of its divisors is an integer number (8926196496).

Almost surely, 2^53440240533 is an apocalyptic number.

It is an amenable number.

53440240533 is a deficient number, since it is larger than the sum of its proper divisors (17969331435).

53440240533 is a wasteful number, since it uses less digits than its factorization.

53440240533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38979483.

The product of its (nonzero) digits is 86400, while the sum is 33.

Adding to 53440240533 its reverse (33504204435), we get a palindrome (86944444968).

The spelling of 53440240533 in words is "fifty-three billion, four hundred forty million, two hundred forty thousand, five hundred thirty-three".