49278167 has 4 divisors (see below), whose sum is σ = 51420720. Its totient is φ = 47135616.

The previous prime is 49278133. The next prime is 49278169. The reversal of 49278167 is 76187294.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 49278167 - 2⁸ = 49277911 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49278169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071242 + ... + 1071287.

It is an arithmetic number, because the mean of its divisors is an integer number (12855180).

Almost surely, 2^49278167 is an apocalyptic number.

49278167 is a deficient number, since it is larger than the sum of its proper divisors (2142553).

49278167 is a wasteful number, since it uses less digits than its factorization.

49278167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142552.

The product of its digits is 169344, while the sum is 44.

The square root of 49278167 is about 7019.8409526142. The cubic root of 49278167 is about 366.6217124869.

The spelling of 49278167 in words is "forty-nine million, two hundred seventy-eight thousand, one hundred sixty-seven".