1051542187 has 2 divisors, whose sum is σ = 1051542188. Its totient is φ = 1051542186.

The previous prime is 1051542181. The next prime is 1051542229. The reversal of 1051542187 is 7812451501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1051542187 is a prime.

It is a super-2 number, since 2×1051542187² = 2211481942081485938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051542181) 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, 525771093 + 525771094.

It is an arithmetic number, because the mean of its divisors is an integer number (525771094).

Almost surely, 2^1051542187 is an apocalyptic number.

1051542187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051542187 is an equidigital number, since it uses as much as digits as its factorization.

1051542187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 34.

The square root of 1051542187 is about 32427.4912227264. The cubic root of 1051542187 is about 1016.8937239467.

Adding to 1051542187 its reverse (7812451501), we get a palindrome (8863993688).

The spelling of 1051542187 in words is "one billion, fifty-one million, five hundred forty-two thousand, one hundred eighty-seven".