45148978 has 16 divisors (see below), whose sum is σ = 81472320. Its totient is φ = 18331056.

The previous prime is 45148973. The next prime is 45148979. The reversal of 45148978 is 87984154.

45148978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (45148973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84601 + ... + 85132.

It is an arithmetic number, because the mean of its divisors is an integer number (5092020).

Almost surely, 2^45148978 is an apocalyptic number.

45148978 is a deficient number, since it is larger than the sum of its proper divisors (36323342).

45148978 is a wasteful number, since it uses less digits than its factorization.

45148978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169761.

The product of its digits is 322560, while the sum is 46.

The square root of 45148978 is about 6719.2989217626. The cubic root of 45148978 is about 356.0814157519.

The spelling of 45148978 in words is "forty-five million, one hundred forty-eight thousand, nine hundred seventy-eight".