53939643 has 8 divisors (see below), whose sum is σ = 72469056. Its totient is φ = 35685000.

The previous prime is 53939621. The next prime is 53939653. The reversal of 53939643 is 34693935.

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

It is not a de Polignac number, because 53939643 - 2⁶ = 53939579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53939595 and 53939604.

It is not an unprimeable number, because it can be changed into a prime (53939653) 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, 68233 + ... + 69018.

It is an arithmetic number, because the mean of its divisors is an integer number (9058632).

Almost surely, 2^53939643 is an apocalyptic number.

53939643 is a deficient number, since it is larger than the sum of its proper divisors (18529413).

53939643 is a wasteful number, since it uses less digits than its factorization.

53939643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137385.

The product of its digits is 262440, while the sum is 42.

The square root of 53939643 is about 7344.3613064718. The cubic root of 53939643 is about 377.8354382928.

The spelling of 53939643 in words is "fifty-three million, nine hundred thirty-nine thousand, six hundred forty-three".