50666987 has 16 divisors (see below), whose sum is σ = 62622720. Its totient is φ = 40000128.

The previous prime is 50666983. The next prime is 50667011. The reversal of 50666987 is 78966605.

It is not a de Polignac number, because 50666987 - 2² = 50666983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50666981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1064 + ... + 10122.

It is an arithmetic number, because the mean of its divisors is an integer number (3913920).

Almost surely, 2^50666987 is an apocalyptic number.

50666987 is a deficient number, since it is larger than the sum of its proper divisors (11955733).

50666987 is a wasteful number, since it uses less digits than its factorization.

50666987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9130.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 50666987 is about 7118.0746694594. The cubic root of 50666987 is about 370.0340533547.

The spelling of 50666987 in words is "fifty million, six hundred sixty-six thousand, nine hundred eighty-seven".