45136709 has 4 divisors (see below), whose sum is σ = 45155616. Its totient is φ = 45117804.

The previous prime is 45136699. The next prime is 45136747. The reversal of 45136709 is 90763154.

45136709 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90763154 = 2 ⋅45381577.

It is a cyclic number.

It is not a de Polignac number, because 45136709 - 2²⁴ = 28359493 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45136009) 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 3 ways as a sum of consecutive naturals, for example, 5249 + ... + 10854.

It is an arithmetic number, because the mean of its divisors is an integer number (11288904).

Almost surely, 2^45136709 is an apocalyptic number.

It is an amenable number.

45136709 is a deficient number, since it is larger than the sum of its proper divisors (18907).

45136709 is a wasteful number, since it uses less digits than its factorization.

45136709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18906.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 45136709 is about 6718.3858924596. The cubic root of 45136709 is about 356.0491584054.

The spelling of 45136709 in words is "forty-five million, one hundred thirty-six thousand, seven hundred nine".