1100655601 has 4 divisors (see below), whose sum is σ = 1100744100. Its totient is φ = 1100567104.

The previous prime is 1100655553. The next prime is 1100655629. The reversal of 1100655601 is 1065560011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1065560011 = 6047 ⋅176213.

It can be written as a sum of positive squares in 2 ways, for example, as 266832225 + 833823376 = 16335^2 + 28876^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100655601 - 2²¹ = 1098558449 is a prime.

It is a super-2 number, since 2×1100655601² = 2422885504025342402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1100655641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21796 + ... + 51733.

It is an arithmetic number, because the mean of its divisors is an integer number (275186025).

Almost surely, 2^1100655601 is an apocalyptic number.

It is an amenable number.

1100655601 is a deficient number, since it is larger than the sum of its proper divisors (88499).

1100655601 is an equidigital number, since it uses as much as digits as its factorization.

1100655601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88498.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1100655601 is about 33176.1299882913. The cubic root of 1100655601 is about 1032.4851546897.

The spelling of 1100655601 in words is "one billion, one hundred million, six hundred fifty-five thousand, six hundred one".