50490887 has 4 divisors (see below), whose sum is σ = 50507760. Its totient is φ = 50474016.

The previous prime is 50490863. The next prime is 50490889. The reversal of 50490887 is 78809405.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78809405 = 5 ⋅15761881.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50490887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50490889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2603 + ... + 10380.

It is an arithmetic number, because the mean of its divisors is an integer number (12626940).

Almost surely, 2^50490887 is an apocalyptic number.

50490887 is a deficient number, since it is larger than the sum of its proper divisors (16873).

50490887 is a wasteful number, since it uses less digits than its factorization.

50490887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16872.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 50490887 is about 7105.6939844043. The cubic root of 50490887 is about 369.6048545078.

The spelling of 50490887 in words is "fifty million, four hundred ninety thousand, eight hundred eighty-seven".