45312139 has 8 divisors (see below), whose sum is σ = 47424672. Its totient is φ = 43211520.

The previous prime is 45312133. The next prime is 45312143. The reversal of 45312139 is 93121354.

45312139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 45312139 - 2¹⁵ = 45279371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45312133) 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 7 ways as a sum of consecutive naturals, for example, 5329 + ... + 10909.

It is an arithmetic number, because the mean of its divisors is an integer number (5928084).

Almost surely, 2^45312139 is an apocalyptic number.

45312139 is a deficient number, since it is larger than the sum of its proper divisors (2112533).

45312139 is a wasteful number, since it uses less digits than its factorization.

45312139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5957.

The product of its digits is 3240, while the sum is 28.

The square root of 45312139 is about 6731.4291944579. The cubic root of 45312139 is about 356.5098400216.

It can be divided in two parts, 45312 and 139, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 45312139 in words is "forty-five million, three hundred twelve thousand, one hundred thirty-nine".