45109129 has 4 divisors (see below), whose sum is σ = 48579076. Its totient is φ = 41639184.

The previous prime is 45109117. The next prime is 45109139. The reversal of 45109129 is 92190154.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3892729 + 41216400 = 1973^2 + 6420^2 .

It is a cyclic number.

It is not a de Polignac number, because 45109129 - 2⁹ = 45108617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45109129.

It is not an unprimeable number, because it can be changed into a prime (45109139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1734954 + ... + 1734979.

It is an arithmetic number, because the mean of its divisors is an integer number (12144769).

Almost surely, 2^45109129 is an apocalyptic number.

It is an amenable number.

45109129 is a deficient number, since it is larger than the sum of its proper divisors (3469947).

45109129 is a wasteful number, since it uses less digits than its factorization.

45109129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469946.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 45109129 is about 6716.3330024650. Note that the first 3 decimals coincide. The cubic root of 45109129 is about 355.9766244173.

The spelling of 45109129 in words is "forty-five million, one hundred nine thousand, one hundred twenty-nine".