53390978 has 8 divisors (see below), whose sum is σ = 80241168. Its totient is φ = 26643924.

The previous prime is 53390957. The next prime is 53390983. The reversal of 53390978 is 87909335.

53390978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24476 + ... + 26567.

It is an arithmetic number, because the mean of its divisors is an integer number (10030146).

Almost surely, 2^53390978 is an apocalyptic number.

53390978 is a deficient number, since it is larger than the sum of its proper divisors (26850190).

53390978 is a wasteful number, since it uses less digits than its factorization.

53390978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51568.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 53390978 is about 7306.9130280851. The cubic root of 53390978 is about 376.5499769932.

The spelling of 53390978 in words is "fifty-three million, three hundred ninety thousand, nine hundred seventy-eight".