1005540155 has 8 divisors (see below), whose sum is σ = 1207735152. Its totient is φ = 803707488.

The previous prime is 1005540131. The next prime is 1005540161. The reversal of 1005540155 is 5510455001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1005540155 - 2¹⁰ = 1005539131 is a prime.

It is a super-2 number, since 2×1005540155² = 2022222006634848050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84437 + ... + 95606.

It is an arithmetic number, because the mean of its divisors is an integer number (150966894).

Almost surely, 2^1005540155 is an apocalyptic number.

1005540155 is a deficient number, since it is larger than the sum of its proper divisors (202194997).

1005540155 is a wasteful number, since it uses less digits than its factorization.

1005540155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181165.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 1005540155 is about 31710.2531525688. The cubic root of 1005540155 is about 1001.8433184228.

Adding to 1005540155 its reverse (5510455001), we get a palindrome (6515995156).

The spelling of 1005540155 in words is "one billion, five million, five hundred forty thousand, one hundred fifty-five".