49053821 has 4 divisors (see below), whose sum is σ = 49858044. Its totient is φ = 48249600.

The previous prime is 49053817. The next prime is 49053859. The reversal of 49053821 is 12835094.

49053821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25908100 + 23145721 = 5090^2 + 4811^2 .

It is a cyclic number.

It is not a de Polignac number, because 49053821 - 2² = 49053817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49053881) 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 3 ways as a sum of consecutive naturals, for example, 402020 + ... + 402141.

It is an arithmetic number, because the mean of its divisors is an integer number (12464511).

Almost surely, 2^49053821 is an apocalyptic number.

It is an amenable number.

49053821 is a deficient number, since it is larger than the sum of its proper divisors (804223).

49053821 is an equidigital number, since it uses as much as digits as its factorization.

49053821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804222.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 49053821 is about 7003.8433020735. The cubic root of 49053821 is about 366.0644998651.

The spelling of 49053821 in words is "forty-nine million, fifty-three thousand, eight hundred twenty-one".