49881187 has 2 divisors, whose sum is σ = 49881188. Its totient is φ = 49881186.

The previous prime is 49881163. The next prime is 49881193. The reversal of 49881187 is 78118894.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49881187 - 2⁷ = 49881059 is a prime.

It is a super-3 number, since 3×49881187³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (49881107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24940593 + 24940594.

It is an arithmetic number, because the mean of its divisors is an integer number (24940594).

Almost surely, 2^49881187 is an apocalyptic number.

49881187 is a deficient number, since it is larger than the sum of its proper divisors (1).

49881187 is an equidigital number, since it uses as much as digits as its factorization.

49881187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 46.

The square root of 49881187 is about 7062.6614671808. The cubic root of 49881187 is about 368.1111111988. Note that the first 7 decimals are identical.

The spelling of 49881187 in words is "forty-nine million, eight hundred eighty-one thousand, one hundred eighty-seven".