53991753 has 4 divisors (see below), whose sum is σ = 71989008. Its totient is φ = 35994500.

The previous prime is 53991719. The next prime is 53991809. The reversal of 53991753 is 35719935.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53991753 - 2⁹ = 53991241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53991713) 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, 8998623 + ... + 8998628.

It is an arithmetic number, because the mean of its divisors is an integer number (17997252).

Almost surely, 2^53991753 is an apocalyptic number.

It is an amenable number.

53991753 is a deficient number, since it is larger than the sum of its proper divisors (17997255).

53991753 is a wasteful number, since it uses less digits than its factorization.

53991753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17997254.

The product of its digits is 127575, while the sum is 42.

The square root of 53991753 is about 7347.9080696481. The cubic root of 53991753 is about 377.9570721946.

The spelling of 53991753 in words is "fifty-three million, nine hundred ninety-one thousand, seven hundred fifty-three".