49127921 has 2 divisors, whose sum is σ = 49127922. Its totient is φ = 49127920.

The previous prime is 49127917. The next prime is 49127927. The reversal of 49127921 is 12972194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48455521 + 672400 = 6961^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 49127921 - 2² = 49127917 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49127927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24563960 + 24563961.

It is an arithmetic number, because the mean of its divisors is an integer number (24563961).

Almost surely, 2^49127921 is an apocalyptic number.

It is an amenable number.

49127921 is a deficient number, since it is larger than the sum of its proper divisors (1).

49127921 is an equidigital number, since it uses as much as digits as its factorization.

49127921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 35.

The square root of 49127921 is about 7009.1312585798. The cubic root of 49127921 is about 366.2487310622.

The spelling of 49127921 in words is "forty-nine million, one hundred twenty-seven thousand, nine hundred twenty-one".