45140549 has 8 divisors (see below), whose sum is σ = 47002200. Its totient is φ = 43315200.

The previous prime is 45140519. The next prime is 45140573. The reversal of 45140549 is 94504154.

It can be written as a sum of positive squares in 4 ways, for example, as 9025 + 45131524 = 95^2 + 6718^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45140549 - 2¹⁶ = 45075013 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 (45140519) 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 7 ways as a sum of consecutive naturals, for example, 6524 + ... + 11525.

It is an arithmetic number, because the mean of its divisors is an integer number (5875275).

Almost surely, 2^45140549 is an apocalyptic number.

It is an amenable number.

45140549 is a deficient number, since it is larger than the sum of its proper divisors (1861651).

45140549 is a wasteful number, since it uses less digits than its factorization.

45140549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18151.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 45140549 is about 6718.6716693108. The cubic root of 45140549 is about 356.0592550653.

The spelling of 45140549 in words is "forty-five million, one hundred forty thousand, five hundred forty-nine".