49220981 has 2 divisors, whose sum is σ = 49220982. Its totient is φ = 49220980.

The previous prime is 49220957. The next prime is 49220987. The reversal of 49220981 is 18902294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33292900 + 15928081 = 5770^2 + 3991^2 .

It is a cyclic number.

It is not a de Polignac number, because 49220981 - 2¹⁰ = 49219957 is a prime.

It is a super-2 number, since 2×49220981² = 4845409941204722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49220987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24610490 + 24610491.

It is an arithmetic number, because the mean of its divisors is an integer number (24610491).

Almost surely, 2^49220981 is an apocalyptic number.

It is an amenable number.

49220981 is a deficient number, since it is larger than the sum of its proper divisors (1).

49220981 is an equidigital number, since it uses as much as digits as its factorization.

49220981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 49220981 is about 7015.7666010209. The cubic root of 49220981 is about 366.4798393493.

The spelling of 49220981 in words is "forty-nine million, two hundred twenty thousand, nine hundred eighty-one".