45097779 has 24 divisors (see below), whose sum is σ = 63608272. Its totient is φ = 28416960.

The previous prime is 45097763. The next prime is 45097781. The reversal of 45097779 is 97779054.

It is not a de Polignac number, because 45097779 - 2⁴ = 45097763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45097729) 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 in 23 ways as a sum of consecutive naturals, for example, 249069 + ... + 249249.

Almost surely, 2^45097779 is an apocalyptic number.

45097779 is a deficient number, since it is larger than the sum of its proper divisors (18510493).

45097779 is a wasteful number, since it uses less digits than its factorization.

45097779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 48.

The square root of 45097779 is about 6715.4879941818. The cubic root of 45097779 is about 355.9467659112.

The spelling of 45097779 in words is "forty-five million, ninety-seven thousand, seven hundred seventy-nine".