49427821 has 2 divisors, whose sum is σ = 49427822. Its totient is φ = 49427820.

The previous prime is 49427813. The next prime is 49427827. The reversal of 49427821 is 12872494.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43956900 + 5470921 = 6630^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 49427821 - 2³ = 49427813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49427827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24713910 + 24713911.

It is an arithmetic number, because the mean of its divisors is an integer number (24713911).

Almost surely, 2^49427821 is an apocalyptic number.

It is an amenable number.

49427821 is a deficient number, since it is larger than the sum of its proper divisors (1).

49427821 is an equidigital number, since it uses as much as digits as its factorization.

49427821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 49427821 is about 7030.4922302780. The cubic root of 49427821 is about 366.9924713911.

The spelling of 49427821 in words is "forty-nine million, four hundred twenty-seven thousand, eight hundred twenty-one".