49178911 has 4 divisors (see below), whose sum is σ = 49771512. Its totient is φ = 48586312.

The previous prime is 49178879. The next prime is 49178917. The reversal of 49178911 is 11987194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11987194 = 2 ⋅5993597.

It is a cyclic number.

It is not a de Polignac number, because 49178911 - 2⁵ = 49178879 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49178917) 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, 296176 + ... + 296341.

It is an arithmetic number, because the mean of its divisors is an integer number (12442878).

Almost surely, 2^49178911 is an apocalyptic number.

49178911 is a deficient number, since it is larger than the sum of its proper divisors (592601).

49178911 is an equidigital number, since it uses as much as digits as its factorization.

49178911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592600.

The product of its digits is 18144, while the sum is 40.

The square root of 49178911 is about 7012.7677132499. The cubic root of 49178911 is about 366.3753974275.

The spelling of 49178911 in words is "forty-nine million, one hundred seventy-eight thousand, nine hundred eleven".