1020055187 has 2 divisors, whose sum is σ = 1020055188. Its totient is φ = 1020055186.

The previous prime is 1020055177. The next prime is 1020055213. The reversal of 1020055187 is 7815500201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1020055187 - 2⁴ = 1020055171 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020055177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510027593 + 510027594.

It is an arithmetic number, because the mean of its divisors is an integer number (510027594).

Almost surely, 2^1020055187 is an apocalyptic number.

1020055187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020055187 is an equidigital number, since it uses as much as digits as its factorization.

1020055187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 1020055187 is about 31938.3028196553. The cubic root of 1020055187 is about 1006.6408636404.

Adding to 1020055187 its reverse (7815500201), we get a palindrome (8835555388).

The spelling of 1020055187 in words is "one billion, twenty million, fifty-five thousand, one hundred eighty-seven".