53431943 has 4 divisors (see below), whose sum is σ = 53447448. Its totient is φ = 53416440.

The previous prime is 53431927. The next prime is 53431957. The reversal of 53431943 is 34913435.

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

It is a cyclic number.

It is not a de Polignac number, because 53431943 - 2⁴ = 53431927 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 (53431043) 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, 5 + ... + 10337.

It is an arithmetic number, because the mean of its divisors is an integer number (13361862).

Almost surely, 2^53431943 is an apocalyptic number.

53431943 is a deficient number, since it is larger than the sum of its proper divisors (15505).

53431943 is a wasteful number, since it uses less digits than its factorization.

53431943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15504.

The product of its digits is 19440, while the sum is 32.

The square root of 53431943 is about 7309.7156579446. The cubic root of 53431943 is about 376.6462568452.

The spelling of 53431943 in words is "fifty-three million, four hundred thirty-one thousand, nine hundred forty-three".