50996987 has 2 divisors, whose sum is σ = 50996988. Its totient is φ = 50996986.

The previous prime is 50996941. The next prime is 50996999. The reversal of 50996987 is 78969905.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50996987 is a prime.

It is not a weakly prime, because it can be changed into another prime (50996917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25498493 + 25498494.

It is an arithmetic number, because the mean of its divisors is an integer number (25498494).

Almost surely, 2^50996987 is an apocalyptic number.

50996987 is a deficient number, since it is larger than the sum of its proper divisors (1).

50996987 is an equidigital number, since it uses as much as digits as its factorization.

50996987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 50996987 is about 7141.2174732324. The cubic root of 50996987 is about 370.8356738423.

The spelling of 50996987 in words is "fifty million, nine hundred ninety-six thousand, nine hundred eighty-seven".