1102155555 has 32 divisors (see below), whose sum is σ = 1823182848. Its totient is φ = 567964800.

The previous prime is 1102155541. The next prime is 1102155559. The reversal of 1102155555 is 5555512011.

It is not a de Polignac number, because 1102155555 - 2²⁵ = 1068601123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1102155559) 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, 380322 + ... + 383208.

It is an arithmetic number, because the mean of its divisors is an integer number (56974464).

Almost surely, 2^1102155555 is an apocalyptic number.

1102155555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1102155555 is a deficient number, since it is larger than the sum of its proper divisors (721027293).

1102155555 is a wasteful number, since it uses less digits than its factorization.

1102155555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3747.

The product of its (nonzero) digits is 6250, while the sum is 30.

The square root of 1102155555 is about 33198.7282135928. The cubic root of 1102155555 is about 1032.9539593014.

Adding to 1102155555 its reverse (5555512011), we get a palindrome (6657667566).

The spelling of 1102155555 in words is "one billion, one hundred two million, one hundred fifty-five thousand, five hundred fifty-five".