49867187 has 2 divisors, whose sum is σ = 49867188. Its totient is φ = 49867186.

The previous prime is 49867183. The next prime is 49867217. The reversal of 49867187 is 78176894.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49867187 - 2² = 49867183 is a prime.

It is not a weakly prime, because it can be changed into another prime (49867183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24933593 + 24933594.

It is an arithmetic number, because the mean of its divisors is an integer number (24933594).

Almost surely, 2^49867187 is an apocalyptic number.

49867187 is a deficient number, since it is larger than the sum of its proper divisors (1).

49867187 is an equidigital number, since it uses as much as digits as its factorization.

49867187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 50.

The square root of 49867187 is about 7061.6702698441. The cubic root of 49867187 is about 368.0766691036.

The spelling of 49867187 in words is "forty-nine million, eight hundred sixty-seven thousand, one hundred eighty-seven".