49866881 has 2 divisors, whose sum is σ = 49866882. Its totient is φ = 49866880.

The previous prime is 49866877. The next prime is 49866889. The reversal of 49866881 is 18866894.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32092225 + 17774656 = 5665^2 + 4216^2 .

It is a cyclic number.

It is not a de Polignac number, because 49866881 - 2² = 49866877 is a prime.

It is a super-2 number, since 2×49866881² = 4973411641336322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49866889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24933440 + 24933441.

It is an arithmetic number, because the mean of its divisors is an integer number (24933441).

Almost surely, 2^49866881 is an apocalyptic number.

It is an amenable number.

49866881 is a deficient number, since it is larger than the sum of its proper divisors (1).

49866881 is an equidigital number, since it uses as much as digits as its factorization.

49866881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 50.

The square root of 49866881 is about 7061.6486035486. The cubic root of 49866881 is about 368.0759162259.

The spelling of 49866881 in words is "forty-nine million, eight hundred sixty-six thousand, eight hundred eighty-one".