53543749 has 8 divisors (see below), whose sum is σ = 61300800. Its totient is φ = 45813696.

The previous prime is 53543741. The next prime is 53543753. The reversal of 53543749 is 94734535.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 53543749 - 2³ = 53543741 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 (53543741) 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, 2299 + ... + 10600.

It is an arithmetic number, because the mean of its divisors is an integer number (7662600).

Almost surely, 2^53543749 is an apocalyptic number.

It is an amenable number.

53543749 is a deficient number, since it is larger than the sum of its proper divisors (7757051).

53543749 is a wasteful number, since it uses less digits than its factorization.

53543749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13499.

The product of its digits is 226800, while the sum is 40.

The square root of 53543749 is about 7317.3594280997. The cubic root of 53543749 is about 376.9087837818.

The spelling of 53543749 in words is "fifty-three million, five hundred forty-three thousand, seven hundred forty-nine".