115781801 has 4 divisors (see below), whose sum is σ = 121875600. Its totient is φ = 109688004.

The previous prime is 115781789. The next prime is 115781803. The reversal of 115781801 is 108187511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 108187511 = 313 ⋅345647.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115781801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115781803) 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, 3046871 + ... + 3046908.

It is an arithmetic number, because the mean of its divisors is an integer number (30468900).

Almost surely, 2^115781801 is an apocalyptic number.

It is an amenable number.

115781801 is a deficient number, since it is larger than the sum of its proper divisors (6093799).

115781801 is an equidigital number, since it uses as much as digits as its factorization.

115781801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093798.

The product of its (nonzero) digits is 2240, while the sum is 32.

The square root of 115781801 is about 10760.1952119838. The cubic root of 115781801 is about 487.3939121333.

The spelling of 115781801 in words is "one hundred fifteen million, seven hundred eighty-one thousand, eight hundred one".