115148777 has 4 divisors (see below), whose sum is σ = 115226496. Its totient is φ = 115071060.

The previous prime is 115148771. The next prime is 115148779. The reversal of 115148777 is 777841511.

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: 777841511 = 17 ⋅45755383.

It is a cyclic number.

It is not a de Polignac number, because 115148777 - 2²⁰ = 114100201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115148771) 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, 36593 + ... + 39614.

It is an arithmetic number, because the mean of its divisors is an integer number (28806624).

Almost surely, 2^115148777 is an apocalyptic number.

It is an amenable number.

115148777 is a deficient number, since it is larger than the sum of its proper divisors (77719).

115148777 is an equidigital number, since it uses as much as digits as its factorization.

115148777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77718.

The product of its digits is 54880, while the sum is 41.

The square root of 115148777 is about 10730.7398160611. The cubic root of 115148777 is about 486.5040312152.

The spelling of 115148777 in words is "one hundred fifteen million, one hundred forty-eight thousand, seven hundred seventy-seven".