115478457 has 4 divisors (see below), whose sum is σ = 153971280. Its totient is φ = 76985636.

The previous prime is 115478431. The next prime is 115478471. The reversal of 115478457 is 754874511.

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 a cyclic number.

It is not a de Polignac number, because 115478457 - 2⁶ = 115478393 is a prime.

It is a super-2 number, since 2×115478457² = 26670548062201698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115478417) 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, 19246407 + ... + 19246412.

It is an arithmetic number, because the mean of its divisors is an integer number (38492820).

Almost surely, 2^115478457 is an apocalyptic number.

It is an amenable number.

115478457 is a deficient number, since it is larger than the sum of its proper divisors (38492823).

115478457 is an equidigital number, since it uses as much as digits as its factorization.

115478457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38492822.

The product of its digits is 156800, while the sum is 42.

The square root of 115478457 is about 10746.0903122950. The cubic root of 115478457 is about 486.9678885711.

The spelling of 115478457 in words is "one hundred fifteen million, four hundred seventy-eight thousand, four hundred fifty-seven".