49996781 has 2 divisors, whose sum is σ = 49996782. Its totient is φ = 49996780.

The previous prime is 49996763. The next prime is 49996787. The reversal of 49996781 is 18769994.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49984900 + 11881 = 7070^2 + 109^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49996781 is a prime.

It is a super-2 number, since 2×49996781² = 4999356220723922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49996787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24998390 + 24998391.

It is an arithmetic number, because the mean of its divisors is an integer number (24998391).

Almost surely, 2^49996781 is an apocalyptic number.

It is an amenable number.

49996781 is a deficient number, since it is larger than the sum of its proper divisors (1).

49996781 is an equidigital number, since it uses as much as digits as its factorization.

49996781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 979776, while the sum is 53.

The square root of 49996781 is about 7070.8401905290. The cubic root of 49996781 is about 368.3952437628.

The spelling of 49996781 in words is "forty-nine million, nine hundred ninety-six thousand, seven hundred eighty-one".