53978566 has 8 divisors (see below), whose sum is σ = 80999640. Its totient is φ = 26978688.

The previous prime is 53978549. The next prime is 53978579. The reversal of 53978566 is 66587935.

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

It is a congruent number.

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, 5350 + ... + 11686.

It is an arithmetic number, because the mean of its divisors is an integer number (10124955).

Almost surely, 2^53978566 is an apocalyptic number.

53978566 is a deficient number, since it is larger than the sum of its proper divisors (27021074).

53978566 is a wasteful number, since it uses less digits than its factorization.

53978566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598.

The product of its digits is 1360800, while the sum is 49.

The square root of 53978566 is about 7347.0106846254. The cubic root of 53978566 is about 377.9262988174.

The spelling of 53978566 in words is "fifty-three million, nine hundred seventy-eight thousand, five hundred sixty-six".