78325547 has 8 divisors (see below), whose sum is σ = 80731200. Its totient is φ = 75950784.

The previous prime is 78325529. The next prime is 78325571. The reversal of 78325547 is 74552387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78325547 - 2⁶ = 78325483 is a prime.

It is a super-2 number, since 2×78325547² = 12269782625698418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78325517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2522 + ... + 12767.

It is an arithmetic number, because the mean of its divisors is an integer number (10091400).

Almost surely, 2^78325547 is an apocalyptic number.

78325547 is a deficient number, since it is larger than the sum of its proper divisors (2405653).

78325547 is a wasteful number, since it uses less digits than its factorization.

78325547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15445.

The product of its digits is 235200, while the sum is 41.

The square root of 78325547 is about 8850.1721452184. The cubic root of 78325547 is about 427.8594667007.

The spelling of 78325547 in words is "seventy-eight million, three hundred twenty-five thousand, five hundred forty-seven".