117078547 has 4 divisors (see below), whose sum is σ = 118826056. Its totient is φ = 115331040.

The previous prime is 117078527. The next prime is 117078571. The reversal of 117078547 is 745870711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 745870711 = 73 ⋅10217407.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117078547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117078517) 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, 873654 + ... + 873787.

It is an arithmetic number, because the mean of its divisors is an integer number (29706514).

Almost surely, 2^117078547 is an apocalyptic number.

117078547 is a deficient number, since it is larger than the sum of its proper divisors (1747509).

117078547 is an equidigital number, since it uses as much as digits as its factorization.

117078547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747508.

The product of its (nonzero) digits is 54880, while the sum is 40.

The square root of 117078547 is about 10820.2840535727. The cubic root of 117078547 is about 489.2067506730.

The spelling of 117078547 in words is "one hundred seventeen million, seventy-eight thousand, five hundred forty-seven".