115138061 has 4 divisors (see below), whose sum is σ = 118852224. Its totient is φ = 111423900.

The previous prime is 115138057. The next prime is 115138103. The reversal of 115138061 is 160831511.

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: 160831511 = 367 ⋅438233.

It is a cyclic number.

It is not a de Polignac number, because 115138061 - 2² = 115138057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115138061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115138021) 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, 1857035 + ... + 1857096.

It is an arithmetic number, because the mean of its divisors is an integer number (29713056).

Almost surely, 2^115138061 is an apocalyptic number.

It is an amenable number.

115138061 is a deficient number, since it is larger than the sum of its proper divisors (3714163).

115138061 is an equidigital number, since it uses as much as digits as its factorization.

115138061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714162.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 115138061 is about 10730.2404912472. The cubic root of 115138061 is about 486.4889390332.

Adding to 115138061 its reverse (160831511), we get a palindrome (275969572).

The spelling of 115138061 in words is "one hundred fifteen million, one hundred thirty-eight thousand, sixty-one".