53849978 has 16 divisors (see below), whose sum is σ = 99415680. Its totient is φ = 21303216.

The previous prime is 53849963. The next prime is 53849987. The reversal of 53849978 is 87994835.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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, 147758 + ... + 148121.

It is an arithmetic number, because the mean of its divisors is an integer number (6213480).

Almost surely, 2^53849978 is an apocalyptic number.

53849978 is a deficient number, since it is larger than the sum of its proper divisors (45565702).

53849978 is a wasteful number, since it uses less digits than its factorization.

53849978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295901.

The product of its digits is 2177280, while the sum is 53.

The square root of 53849978 is about 7338.2544245890. The cubic root of 53849978 is about 377.6259609189.

The spelling of 53849978 in words is "fifty-three million, eight hundred forty-nine thousand, nine hundred seventy-eight".