53091943 has 4 divisors (see below), whose sum is σ = 53133280. Its totient is φ = 53050608.

The previous prime is 53091919. The next prime is 53091949. The reversal of 53091943 is 34919035.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34919035 = 5 ⋅6983807.

It is a cyclic number.

It is not a de Polignac number, because 53091943 - 2⁵ = 53091911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53091899 and 53091908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53091949) 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, 18678 + ... + 21331.

It is an arithmetic number, because the mean of its divisors is an integer number (13283320).

Almost surely, 2^53091943 is an apocalyptic number.

53091943 is a deficient number, since it is larger than the sum of its proper divisors (41337).

53091943 is a wasteful number, since it uses less digits than its factorization.

53091943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41336.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 53091943 is about 7286.4218241878. The cubic root of 53091943 is about 375.8456601163.

The spelling of 53091943 in words is "fifty-three million, ninety-one thousand, nine hundred forty-three".