1001055115 has 32 divisors (see below), whose sum is σ = 1315077120. Its totient is φ = 728569344.

The previous prime is 1001055103. The next prime is 1001055119. The reversal of 1001055115 is 5115501001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1001055115 - 2⁷ = 1001054987 is a prime.

It is a super-2 number, since 2×1001055115² = 2004222686535326450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001055092 and 1001055101.

It is not an unprimeable number, because it can be changed into a prime (1001055119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 330076 + ... + 333094.

It is an arithmetic number, because the mean of its divisors is an integer number (41096160).

Almost surely, 2^1001055115 is an apocalyptic number.

1001055115 is a deficient number, since it is larger than the sum of its proper divisors (314022005).

1001055115 is a wasteful number, since it uses less digits than its factorization.

1001055115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3171.

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

The square root of 1001055115 is about 31639.4550363940. The cubic root of 1001055115 is about 1000.3515813760.

Adding to 1001055115 its reverse (5115501001), we get a palindrome (6116556116).

The spelling of 1001055115 in words is "one billion, one million, fifty-five thousand, one hundred fifteen".