45731849 has 4 divisors (see below), whose sum is σ = 46245780. Its totient is φ = 45217920.

The previous prime is 45731837. The next prime is 45731857. The reversal of 45731849 is 94813754.

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 24571849 + 21160000 = 4957^2 + 4600^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45731849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45731809) 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 3 ways as a sum of consecutive naturals, for example, 256832 + ... + 257009.

It is an arithmetic number, because the mean of its divisors is an integer number (11561445).

Almost surely, 2^45731849 is an apocalyptic number.

It is an amenable number.

45731849 is a deficient number, since it is larger than the sum of its proper divisors (513931).

45731849 is an equidigital number, since it uses as much as digits as its factorization.

45731849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513930.

The product of its digits is 120960, while the sum is 41.

The square root of 45731849 is about 6762.5327355954. The cubic root of 45731849 is about 357.6071995015.

The spelling of 45731849 in words is "forty-five million, seven hundred thirty-one thousand, eight hundred forty-nine".