1117151555 has 16 divisors (see below), whose sum is σ = 1452912384. Its totient is φ = 819711360.

The previous prime is 1117151537. The next prime is 1117151611. The reversal of 1117151555 is 5551517111.

It is not a de Polignac number, because 1117151555 - 2⁶ = 1117151491 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44531 + ... + 64940.

It is an arithmetic number, because the mean of its divisors is an integer number (90807024).

Almost surely, 2^1117151555 is an apocalyptic number.

1117151555 is a deficient number, since it is larger than the sum of its proper divisors (335760829).

1117151555 is a wasteful number, since it uses less digits than its factorization.

1117151555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109646.

The product of its digits is 4375, while the sum is 32.

The square root of 1117151555 is about 33423.8171817643. The cubic root of 1117151555 is about 1037.6176840425.

Adding to 1117151555 its reverse (5551517111), we get a palindrome (6668668666).

It can be divided in two parts, 11171 and 51555, that added together give a palindrome (62726).

The spelling of 1117151555 in words is "one billion, one hundred seventeen million, one hundred fifty-one thousand, five hundred fifty-five".