45579978 has 48 divisors (see below), whose sum is σ = 101424960. Its totient is φ = 14788608.

The previous prime is 45579971. The next prime is 45579979. The reversal of 45579978 is 87997554.

It is not an unprimeable number, because it can be changed into a prime (45579971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177226 + ... + 177482.

It is an arithmetic number, because the mean of its divisors is an integer number (2113020).

Almost surely, 2^45579978 is an apocalyptic number.

45579978 is an abundant number, since it is smaller than the sum of its proper divisors (55844982).

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

45579978 is a wasteful number, since it uses less digits than its factorization.

45579978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 488 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 45579978 is about 6751.2945425303. The cubic root of 45579978 is about 357.2109009705.

It can be divided in two parts, 4557 and 9978, that added together give a triangular number (14535 = T₁₇₀).

The spelling of 45579978 in words is "forty-five million, five hundred seventy-nine thousand, nine hundred seventy-eight".