545562978 has 8 divisors (see below), whose sum is σ = 1091125968. Its totient is φ = 181854324.

The previous prime is 545562971. The next prime is 545562989. The reversal of 545562978 is 879265545.

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

545562978 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 545562978.

It is not an unprimeable number, because it can be changed into a prime (545562971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45463576 + ... + 45463587.

It is an arithmetic number, because the mean of its divisors is an integer number (136390746).

Almost surely, 2^545562978 is an apocalyptic number.

545562978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

545562978 is a wasteful number, since it uses less digits than its factorization.

545562978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90927168.

The product of its digits is 3024000, while the sum is 51.

The square root of 545562978 is about 23357.2896115966. The cubic root of 545562978 is about 817.1120788557.

The spelling of 545562978 in words is "five hundred forty-five million, five hundred sixty-two thousand, nine hundred seventy-eight".