1005515011 has 2 divisors, whose sum is σ = 1005515012. Its totient is φ = 1005515010.

The previous prime is 1005515009. The next prime is 1005515023. The reversal of 1005515011 is 1105155001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1105155001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1005515011 - 2¹ = 1005515009 is a prime.

It is a super-2 number, since 2×1005515011² = 2022120874692660242, which contains 22 as substring.

Together with 1005515009, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1005515011.

It is not a weakly prime, because it can be changed into another prime (1005515051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502757505 + 502757506.

It is an arithmetic number, because the mean of its divisors is an integer number (502757506).

Almost surely, 2^1005515011 is an apocalyptic number.

1005515011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005515011 is an equidigital number, since it uses as much as digits as its factorization.

1005515011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125, while the sum is 19.

The square root of 1005515011 is about 31709.8566852643. The cubic root of 1005515011 is about 1001.8349678335.

The spelling of 1005515011 in words is "one billion, five million, five hundred fifteen thousand, eleven".