1001550115 has 4 divisors (see below), whose sum is σ = 1201860144. Its totient is φ = 801240088.

The previous prime is 1001550107. The next prime is 1001550161. The reversal of 1001550115 is 5110551001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001550115 - 2³ = 1001550107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001550092 and 1001550101.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100155007 + ... + 100155016.

It is an arithmetic number, because the mean of its divisors is an integer number (300465036).

Almost surely, 2^1001550115 is an apocalyptic number.

1001550115 is a deficient number, since it is larger than the sum of its proper divisors (200310029).

1001550115 is an equidigital number, since it uses as much as digits as its factorization.

1001550115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200310028.

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

The square root of 1001550115 is about 31647.2765810899. The cubic root of 1001550115 is about 1000.5164382456.

The spelling of 1001550115 in words is "one billion, one million, five hundred fifty thousand, one hundred fifteen".