45852139 has 4 divisors (see below), whose sum is σ = 47091424. Its totient is φ = 44612856.

The previous prime is 45852137. The next prime is 45852143. The reversal of 45852139 is 93125854.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93125854 = 2 ⋅46562927.

It is a cyclic number.

It is not a de Polignac number, because 45852139 - 2¹ = 45852137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 1239247 = 45852139 / (4 + 5 + 8 + 5 + 2 + 1 + 3 + 9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 45852098 and 45852107.

It is not an unprimeable number, because it can be changed into a prime (45852137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619587 + ... + 619660.

It is an arithmetic number, because the mean of its divisors is an integer number (11772856).

Almost surely, 2^45852139 is an apocalyptic number.

45852139 is a deficient number, since it is larger than the sum of its proper divisors (1239285).

45852139 is a wasteful number, since it uses less digits than its factorization.

45852139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239284.

The product of its digits is 43200, while the sum is 37.

The square root of 45852139 is about 6771.4207519545. The cubic root of 45852139 is about 357.9204670238.

It can be divided in two parts, 4585 and 2139, that added together give a square (6724 = 82²).

The spelling of 45852139 in words is "forty-five million, eight hundred fifty-two thousand, one hundred thirty-nine".