53978843 has 8 divisors (see below), whose sum is σ = 56125440. Its totient is φ = 51857640.

The previous prime is 53978833. The next prime is 53978849. The reversal of 53978843 is 34887935.

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 53978843 - 2¹² = 53974747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53978849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955 + ... + 10572.

It is an arithmetic number, because the mean of its divisors is an integer number (7015680).

Almost surely, 2^53978843 is an apocalyptic number.

53978843 is a deficient number, since it is larger than the sum of its proper divisors (2146597).

53978843 is a wasteful number, since it uses less digits than its factorization.

53978843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12697.

The product of its digits is 725760, while the sum is 47.

The square root of 53978843 is about 7347.0295358056. The cubic root of 53978843 is about 377.9269452802.

The spelling of 53978843 in words is "fifty-three million, nine hundred seventy-eight thousand, eight hundred forty-three".