53440053 has 4 divisors (see below), whose sum is σ = 71253408. Its totient is φ = 35626700.

The previous prime is 53440031. The next prime is 53440091. The reversal of 53440053 is 35004435.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53440053 - 2²⁰ = 52391477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53440003) 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, 8906673 + ... + 8906678.

It is an arithmetic number, because the mean of its divisors is an integer number (17813352).

Almost surely, 2^53440053 is an apocalyptic number.

It is an amenable number.

53440053 is a deficient number, since it is larger than the sum of its proper divisors (17813355).

53440053 is a wasteful number, since it uses less digits than its factorization.

53440053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17813354.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53440053 is about 7310.2703780366. The cubic root of 53440053 is about 376.6653119050.

Adding to 53440053 its reverse (35004435), we get a palindrome (88444488).

The spelling of 53440053 in words is "fifty-three million, four hundred forty thousand, fifty-three".