45777778 has 4 divisors (see below), whose sum is σ = 68666670. Its totient is φ = 22888888.

The previous prime is 45777763. The next prime is 45777791. The reversal of 45777778 is 87777754.

45777778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44182609 + 1595169 = 6647^2 + 1263^2 .

It is a plaindrome in base 10.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 11444443 + ... + 11444446.

Almost surely, 2^45777778 is an apocalyptic number.

45777778 is a deficient number, since it is larger than the sum of its proper divisors (22888892).

45777778 is a wasteful number, since it uses less digits than its factorization.

45777778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22888891.

The product of its digits is 2689120, while the sum is 52.

The square root of 45777778 is about 6765.9277264836. The cubic root of 45777778 is about 357.7268757304.

The spelling of 45777778 in words is "forty-five million, seven hundred seventy-seven thousand, seven hundred seventy-eight".