45378689 has 2 divisors, whose sum is σ = 45378690. Its totient is φ = 45378688.

The previous prime is 45378629. The next prime is 45378703. The reversal of 45378689 is 98687354.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40538689 + 4840000 = 6367^2 + 2200^2 .

It is a cyclic number.

It is not a de Polignac number, because 45378689 - 2⁸ = 45378433 is a prime.

It is not a weakly prime, because it can be changed into another prime (45378629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22689344 + 22689345.

It is an arithmetic number, because the mean of its divisors is an integer number (22689345).

Almost surely, 2^45378689 is an apocalyptic number.

It is an amenable number.

45378689 is a deficient number, since it is larger than the sum of its proper divisors (1).

45378689 is an equidigital number, since it uses as much as digits as its factorization.

45378689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 45378689 is about 6736.3706103509. The cubic root of 45378689 is about 356.6842901396.

The spelling of 45378689 in words is "forty-five million, three hundred seventy-eight thousand, six hundred eighty-nine".