1101555255 has 16 divisors (see below), whose sum is σ = 1771720704. Its totient is φ = 584418720.

The previous prime is 1101555211. The next prime is 1101555281. The reversal of 1101555255 is 5525551011.

It is not a de Polignac number, because 1101555255 - 2¹⁰ = 1101554231 is a prime.

It is a congruent 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, 189379 + ... + 195108.

It is an arithmetic number, because the mean of its divisors is an integer number (110732544).

Almost surely, 2^1101555255 is an apocalyptic number.

1101555255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1101555255 is a deficient number, since it is larger than the sum of its proper divisors (670165449).

1101555255 is a wasteful number, since it uses less digits than its factorization.

1101555255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384686.

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

The square root of 1101555255 is about 33189.6859732056. The cubic root of 1101555255 is about 1032.7663890227.

The spelling of 1101555255 in words is "one billion, one hundred one million, five hundred fifty-five thousand, two hundred fifty-five".