49275139 has 4 divisors (see below), whose sum is σ = 49289256. Its totient is φ = 49261024.

The previous prime is 49275091. The next prime is 49275167. The reversal of 49275139 is 93157294.

49275139 = T₅₇₃₀ + T₅₇₃₁ + T₅₇₃₂.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 49275139 - 2⁹ = 49274627 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49275169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2427 + ... + 10219.

It is an arithmetic number, because the mean of its divisors is an integer number (12322314).

Almost surely, 2^49275139 is an apocalyptic number.

49275139 is the 5732-nd centered triangular number.

49275139 is a deficient number, since it is larger than the sum of its proper divisors (14117).

49275139 is an equidigital number, since it uses as much as digits as its factorization.

49275139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14116.

The product of its digits is 68040, while the sum is 40.

The square root of 49275139 is about 7019.6252748989. The cubic root of 49275139 is about 366.6142030539.

The spelling of 49275139 in words is "forty-nine million, two hundred seventy-five thousand, one hundred thirty-nine".