115105057 has 4 divisors (see below), whose sum is σ = 115142020. Its totient is φ = 115068096.

The previous prime is 115105049. The next prime is 115105061. The reversal of 115105057 is 750501511.

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

It can be written as a sum of positive squares in 2 ways, for example, as 54405376 + 60699681 = 7376^2 + 7791^2 .

It is a cyclic number.

It is not a de Polignac number, because 115105057 - 2³ = 115105049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115105027) 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, 13332 + ... + 20197.

It is an arithmetic number, because the mean of its divisors is an integer number (28785505).

Almost surely, 2^115105057 is an apocalyptic number.

It is an amenable number.

115105057 is a deficient number, since it is larger than the sum of its proper divisors (36963).

115105057 is an equidigital number, since it uses as much as digits as its factorization.

115105057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36962.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 115105057 is about 10728.7024844573. The cubic root of 115105057 is about 486.4424510309.

Adding to 115105057 its reverse (750501511), we get a palindrome (865606568).

The spelling of 115105057 in words is "one hundred fifteen million, one hundred five thousand, fifty-seven".