49978361 has 2 divisors, whose sum is σ = 49978362. Its totient is φ = 49978360.

The previous prime is 49978319. The next prime is 49978387. The reversal of 49978361 is 16387994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45697600 + 4280761 = 6760^2 + 2069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49978361 is a prime.

It is a super-3 number, since 3×49978361³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (49978301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24989180 + 24989181.

It is an arithmetic number, because the mean of its divisors is an integer number (24989181).

Almost surely, 2^49978361 is an apocalyptic number.

It is an amenable number.

49978361 is a deficient number, since it is larger than the sum of its proper divisors (1).

49978361 is an equidigital number, since it uses as much as digits as its factorization.

49978361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 47.

The square root of 49978361 is about 7069.5375379158. The cubic root of 49978361 is about 368.3499963570.

The spelling of 49978361 in words is "forty-nine million, nine hundred seventy-eight thousand, three hundred sixty-one".