49771921 has 2 divisors, whose sum is σ = 49771922. Its totient is φ = 49771920.

The previous prime is 49771901. The next prime is 49771949. The reversal of 49771921 is 12917794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32433025 + 17338896 = 5695^2 + 4164^2 .

It is a cyclic number.

It is not a de Polignac number, because 49771921 - 2⁵ = 49771889 is a prime.

It is not a weakly prime, because it can be changed into another prime (49771901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24885960 + 24885961.

It is an arithmetic number, because the mean of its divisors is an integer number (24885961).

Almost surely, 2^49771921 is an apocalyptic number.

It is an amenable number.

49771921 is a deficient number, since it is larger than the sum of its proper divisors (1).

49771921 is an equidigital number, since it uses as much as digits as its factorization.

49771921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 40.

The square root of 49771921 is about 7054.9217571848. The cubic root of 49771921 is about 367.8421291369.

The spelling of 49771921 in words is "forty-nine million, seven hundred seventy-one thousand, nine hundred twenty-one".