49955021 has 2 divisors, whose sum is σ = 49955022. Its totient is φ = 49955020.

The previous prime is 49954973. The next prime is 49955029. The reversal of 49955021 is 12055994.

49955021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47955625 + 1999396 = 6925^2 + 1414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49955021 is a prime.

It is a super-2 number, since 2×49955021² = 4991008246220882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49955029) 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 as a sum of consecutive naturals, namely, 24977510 + 24977511.

It is an arithmetic number, because the mean of its divisors is an integer number (24977511).

Almost surely, 2^49955021 is an apocalyptic number.

It is an amenable number.

49955021 is a deficient number, since it is larger than the sum of its proper divisors (1).

49955021 is an equidigital number, since it uses as much as digits as its factorization.

49955021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 49955021 is about 7067.8866006749. The cubic root of 49955021 is about 368.2926473536.

The spelling of 49955021 in words is "forty-nine million, nine hundred fifty-five thousand, twenty-one".