45502778 has 16 divisors (see below), whose sum is σ = 72394560. Its totient is φ = 21375936.

The previous prime is 45502771. The next prime is 45502781. The reversal of 45502778 is 87720554.

45502778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45502771) 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, 35513 + ... + 36771.

It is an arithmetic number, because the mean of its divisors is an integer number (4524660).

Almost surely, 2^45502778 is an apocalyptic number.

45502778 is a deficient number, since it is larger than the sum of its proper divisors (26891782).

45502778 is a wasteful number, since it uses less digits than its factorization.

45502778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341.

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 45502778 is about 6745.5746975332. The cubic root of 45502778 is about 357.0091145243.

The spelling of 45502778 in words is "forty-five million, five hundred two thousand, seven hundred seventy-eight".