45051689 has 2 divisors, whose sum is σ = 45051690. Its totient is φ = 45051688.

The previous prime is 45051673. The next prime is 45051719. The reversal of 45051689 is 98615054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42680089 + 2371600 = 6533^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 45051689 - 2⁴ = 45051673 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (45057689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22525844 + 22525845.

It is an arithmetic number, because the mean of its divisors is an integer number (22525845).

Almost surely, 2^45051689 is an apocalyptic number.

It is an amenable number.

45051689 is a deficient number, since it is larger than the sum of its proper divisors (1).

45051689 is an equidigital number, since it uses as much as digits as its factorization.

45051689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 45051689 is about 6712.0554973868. The cubic root of 45051689 is about 355.8254651966.

The spelling of 45051689 in words is "forty-five million, fifty-one thousand, six hundred eighty-nine".