576552978 has 56 divisors (see below), whose sum is σ = 1314656028. Its totient is φ = 189516672.

The previous prime is 576552961. The next prime is 576552979. The reversal of 576552978 is 879255675.

576552978 is a `hidden beast` number, since 57 + 65 + 529 + 7 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 550512369 + 26040609 = 23463^2 + 5103^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (576552979) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 103726 + ... + 109142.

Almost surely, 2^576552978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 576552978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657328014).

576552978 is an abundant number, since it is smaller than the sum of its proper divisors (738103050).

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

576552978 is an equidigital number, since it uses as much as digits as its factorization.

576552978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510 (or 5495 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 54.

The square root of 576552978 is about 24011.5176113464. The cubic root of 576552978 is about 832.2997034568.

The spelling of 576552978 in words is "five hundred seventy-six million, five hundred fifty-two thousand, nine hundred seventy-eight".