45518978 has 16 divisors (see below), whose sum is σ = 71413056. Its totient is φ = 21719280.

The previous prime is 45518971. The next prime is 45518987. The reversal of 45518978 is 87981554.

It is not an unprimeable number, because it can be changed into a prime (45518971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25400 + ... + 27132.

It is an arithmetic number, because the mean of its divisors is an integer number (4463316).

Almost surely, 2^45518978 is an apocalyptic number.

45518978 is a deficient number, since it is larger than the sum of its proper divisors (25894078).

45518978 is a wasteful number, since it uses less digits than its factorization.

45518978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its digits is 403200, while the sum is 47.

The square root of 45518978 is about 6746.7753779120. The cubic root of 45518978 is about 357.0514772231.

The spelling of 45518978 in words is "forty-five million, five hundred eighteen thousand, nine hundred seventy-eight".