49492021 has 4 divisors (see below), whose sum is σ = 51643872. Its totient is φ = 47340172.

The previous prime is 49492007. The next prime is 49492031. The reversal of 49492021 is 12029494.

It is a happy number.

49492021 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 49492021 - 2¹⁹ = 48967733 is a prime.

It is a Smith number, since the sum of its digits (31) 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 (49492031) 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, 1075891 + ... + 1075936.

It is an arithmetic number, because the mean of its divisors is an integer number (12910968).

Almost surely, 2^49492021 is an apocalyptic number.

It is an amenable number.

49492021 is a deficient number, since it is larger than the sum of its proper divisors (2151851).

49492021 is a wasteful number, since it uses less digits than its factorization.

49492021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151850.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 49492021 is about 7035.0565740440. The cubic root of 49492021 is about 367.1512937084.

The spelling of 49492021 in words is "forty-nine million, four hundred ninety-two thousand, twenty-one".