53443031 has 4 divisors (see below), whose sum is σ = 53571000. Its totient is φ = 53315064.

The previous prime is 53442989. The next prime is 53443063. The reversal of 53443031 is 13034435.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13034435 = 5 ⋅2606887.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53443031 is a prime.

It is a super-2 number, since 2×53443031² = 5712315124933922, 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 = 53442988 and 53443006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53443231) 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, 63356 + ... + 64193.

It is an arithmetic number, because the mean of its divisors is an integer number (13392750).

Almost surely, 2^53443031 is an apocalyptic number.

53443031 is a deficient number, since it is larger than the sum of its proper divisors (127969).

53443031 is a wasteful number, since it uses less digits than its factorization.

53443031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127968.

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

The square root of 53443031 is about 7310.4740612357. The cubic root of 53443031 is about 376.6723084579.

Adding to 53443031 its reverse (13034435), we get a palindrome (66477466).

The spelling of 53443031 in words is "fifty-three million, four hundred forty-three thousand, thirty-one".