1156171055 has 8 divisors (see below), whose sum is σ = 1494128832. Its totient is φ = 853787808.

The previous prime is 1156171031. The next prime is 1156171063. The reversal of 1156171055 is 5501716511.

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 1156171055 - 2¹⁸ = 1155908911 is a prime.

It is a Duffinian number.

It is a congruent 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, 8893559 + ... + 8893688.

It is an arithmetic number, because the mean of its divisors is an integer number (186766104).

Almost surely, 2^1156171055 is an apocalyptic number.

1156171055 is a deficient number, since it is larger than the sum of its proper divisors (337957777).

1156171055 is a wasteful number, since it uses less digits than its factorization.

1156171055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17787265.

The product of its (nonzero) digits is 5250, while the sum is 32.

The square root of 1156171055 is about 34002.5154216567. The cubic root of 1156171055 is about 1049.5602255087.

Adding to 1156171055 its reverse (5501716511), we get a palindrome (6657887566).

The spelling of 1156171055 in words is "one billion, one hundred fifty-six million, one hundred seventy-one thousand, fifty-five".