2113697555 has 4 divisors (see below), whose sum is σ = 2536437072. Its totient is φ = 1690958040.

The previous prime is 2113697543. The next prime is 2113697563. The reversal of 2113697555 is 5557963112.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2113697555 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211369751 + ... + 211369760.

It is an arithmetic number, because the mean of its divisors is an integer number (634109268).

Almost surely, 2^2113697555 is an apocalyptic number.

2113697555 is a deficient number, since it is larger than the sum of its proper divisors (422739517).

2113697555 is an equidigital number, since it uses as much as digits as its factorization.

2113697555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422739516.

The product of its digits is 283500, while the sum is 44.

The square root of 2113697555 is about 45974.9666122772. The cubic root of 2113697555 is about 1283.3573877915.

The spelling of 2113697555 in words is "two billion, one hundred thirteen million, six hundred ninety-seven thousand, five hundred fifty-five".