49857621 has 16 divisors (see below), whose sum is σ = 72664128. Its totient is φ = 30156800.

The previous prime is 49857607. The next prime is 49857631. The reversal of 49857621 is 12675894.

49857621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 49857621 - 2⁹ = 49857109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49857601) 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, 19975 + ... + 22331.

It is an arithmetic number, because the mean of its divisors is an integer number (4541508).

Almost surely, 2^49857621 is an apocalyptic number.

It is an amenable number.

49857621 is a deficient number, since it is larger than the sum of its proper divisors (22806507).

49857621 is a wasteful number, since it uses less digits than its factorization.

49857621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012.

The product of its digits is 120960, while the sum is 42.

The square root of 49857621 is about 7060.9929188465. The cubic root of 49857621 is about 368.0531316047.

The spelling of 49857621 in words is "forty-nine million, eight hundred fifty-seven thousand, six hundred twenty-one".