45729161 has 4 divisors (see below), whose sum is σ = 46009872. Its totient is φ = 45448452.

The previous prime is 45729149. The next prime is 45729163. The reversal of 45729161 is 16192754.

45729161 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45729161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45729163) 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, 140111 + ... + 140436.

It is an arithmetic number, because the mean of its divisors is an integer number (11502468).

Almost surely, 2^45729161 is an apocalyptic number.

It is an amenable number.

45729161 is a deficient number, since it is larger than the sum of its proper divisors (280711).

45729161 is a wasteful number, since it uses less digits than its factorization.

45729161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280710.

The product of its digits is 15120, while the sum is 35.

The square root of 45729161 is about 6762.3339905686. Note that the first 3 decimals coincide. The cubic root of 45729161 is about 357.6001929550.

The spelling of 45729161 in words is "forty-five million, seven hundred twenty-nine thousand, one hundred sixty-one".