115777461 has 4 divisors (see below), whose sum is σ = 154369952. Its totient is φ = 77184972.

The previous prime is 115777439. The next prime is 115777471. The reversal of 115777461 is 164777511.

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.

It is not a de Polignac number, because 115777461 - 2¹⁷ = 115646389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115777421) 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, 19296241 + ... + 19296246.

It is an arithmetic number, because the mean of its divisors is an integer number (38592488).

Almost surely, 2^115777461 is an apocalyptic number.

It is an amenable number.

115777461 is a deficient number, since it is larger than the sum of its proper divisors (38592491).

115777461 is an equidigital number, since it uses as much as digits as its factorization.

115777461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38592490.

The product of its digits is 41160, while the sum is 39.

The square root of 115777461 is about 10759.9935408903. The cubic root of 115777461 is about 487.3878221837.

Subtracting 115777461 from its reverse (164777511), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 115777461 in words is "one hundred fifteen million, seven hundred seventy-seven thousand, four hundred sixty-one".