49780121 has 2 divisors, whose sum is σ = 49780122. Its totient is φ = 49780120.

The previous prime is 49780117. The next prime is 49780151. The reversal of 49780121 is 12108794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34058896 + 15721225 = 5836^2 + 3965^2 .

It is a cyclic number.

It is not a de Polignac number, because 49780121 - 2² = 49780117 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (49780151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24890060 + 24890061.

It is an arithmetic number, because the mean of its divisors is an integer number (24890061).

Almost surely, 2^49780121 is an apocalyptic number.

It is an amenable number.

49780121 is a deficient number, since it is larger than the sum of its proper divisors (1).

49780121 is an equidigital number, since it uses as much as digits as its factorization.

49780121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 49780121 is about 7055.5028878174. The cubic root of 49780121 is about 367.8623288785.

The spelling of 49780121 in words is "forty-nine million, seven hundred eighty thousand, one hundred twenty-one".