53978 has 8 divisors (see below), whose sum is σ = 81972. Its totient is φ = 26656.

The previous prime is 53959. The next prime is 53987. The reversal of 53978 is 87935.

It can be written as a sum of positive squares in 2 ways, for example, as 47089 + 6889 = 217^2 + 83^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176 + ... + 372.

2⁵³⁹⁷⁸ is an apocalyptic number.

53978 is a deficient number, since it is larger than the sum of its proper divisors (27994).

53978 is a wasteful number, since it uses less digits than its factorization.

53978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336.

The product of its digits is 7560, while the sum is 32.

The square root of 53978 is about 232.3316594870. The cubic root of 53978 is about 37.7924977879.

The spelling of 53978 in words is "fifty-three thousand, nine hundred seventy-eight".