49143505 has 4 divisors (see below), whose sum is σ = 58972212. Its totient is φ = 39314800.

The previous prime is 49143503. The next prime is 49143517. The reversal of 49143505 is 50534194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50534194 = 2 ⋅25267097.

It can be written as a sum of positive squares in 2 ways, for example, as 18584721 + 30558784 = 4311^2 + 5528^2 .

It is not a de Polignac number, because 49143505 - 2¹ = 49143503 is a prime.

It is a super-3 number, since 3×49143505³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49143503) 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, 4914346 + ... + 4914355.

It is an arithmetic number, because the mean of its divisors is an integer number (14743053).

Almost surely, 2^49143505 is an apocalyptic number.

It is an amenable number.

49143505 is a deficient number, since it is larger than the sum of its proper divisors (9828707).

49143505 is an equidigital number, since it uses as much as digits as its factorization.

49143505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9828706.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 49143505 is about 7010.2428631254. The cubic root of 49143505 is about 366.2874532165.

Adding to 49143505 its reverse (50534194), we get a palindrome (99677699).

The spelling of 49143505 in words is "forty-nine million, one hundred forty-three thousand, five hundred five".