49078821 has 16 divisors (see below), whose sum is σ = 72396288. Its totient is φ = 29324400.

The previous prime is 49078793. The next prime is 49078853. The reversal of 49078821 is 12887094.

49078821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 49078821 - 2⁵ = 49078789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49078821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49078871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8131 + ... + 12816.

It is an arithmetic number, because the mean of its divisors is an integer number (4524768).

Almost surely, 2^49078821 is an apocalyptic number.

It is an amenable number.

49078821 is a deficient number, since it is larger than the sum of its proper divisors (23317467).

49078821 is a wasteful number, since it uses less digits than its factorization.

49078821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21032.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 49078821 is about 7005.6278091260. The cubic root of 49078821 is about 366.1266768649.

The spelling of 49078821 in words is "forty-nine million, seventy-eight thousand, eight hundred twenty-one".