48821987 has 2 divisors, whose sum is σ = 48821988. Its totient is φ = 48821986.

The previous prime is 48821911. The next prime is 48822013. The reversal of 48821987 is 78912884.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 48821987 - 2¹⁰ = 48820963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (48821287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24410993 + 24410994.

It is an arithmetic number, because the mean of its divisors is an integer number (24410994).

Almost surely, 2^48821987 is an apocalyptic number.

48821987 is a deficient number, since it is larger than the sum of its proper divisors (1).

48821987 is an equidigital number, since it uses as much as digits as its factorization.

48821987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 47.

The square root of 48821987 is about 6987.2732163556. The cubic root of 48821987 is about 365.4869013317.

The spelling of 48821987 in words is "forty-eight million, eight hundred twenty-one thousand, nine hundred eighty-seven".