49878011 has 4 divisors (see below), whose sum is σ = 49893624. Its totient is φ = 49862400.

The previous prime is 49877981. The next prime is 49878013. The reversal of 49878011 is 11087894.

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 49878011 - 2¹⁰ = 49876987 is a prime.

It is a super-2 number, since 2×49878011² = 4975631962632242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49878013) 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, 1085 + ... + 10046.

It is an arithmetic number, because the mean of its divisors is an integer number (12473406).

Almost surely, 2^49878011 is an apocalyptic number.

49878011 is a deficient number, since it is larger than the sum of its proper divisors (15613).

49878011 is a wasteful number, since it uses less digits than its factorization.

49878011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15612.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 49878011 is about 7062.4366191846. The cubic root of 49878011 is about 368.1032983287.

The spelling of 49878011 in words is "forty-nine million, eight hundred seventy-eight thousand, eleven".