53968749 has 4 divisors (see below), whose sum is σ = 71958336. Its totient is φ = 35979164.

The previous prime is 53968703. The next prime is 53968757. The reversal of 53968749 is 94786935.

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 53968749 - 2²⁰ = 52920173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53968249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8994789 + ... + 8994794.

It is an arithmetic number, because the mean of its divisors is an integer number (17989584).

Almost surely, 2^53968749 is an apocalyptic number.

It is an amenable number.

53968749 is a deficient number, since it is larger than the sum of its proper divisors (17989587).

53968749 is a wasteful number, since it uses less digits than its factorization.

53968749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17989586.

The product of its digits is 1632960, while the sum is 51.

The square root of 53968749 is about 7346.3425593965. The cubic root of 53968749 is about 377.9033864672.

The spelling of 53968749 in words is "fifty-three million, nine hundred sixty-eight thousand, seven hundred forty-nine".