78055345 has 8 divisors (see below), whose sum is σ = 94185000. Its totient is φ = 62098560.

The previous prime is 78055301. The next prime is 78055409. The reversal of 78055345 is 54355087.

It can be written as a sum of positive squares in 4 ways, for example, as 7091569 + 70963776 = 2663^2 + 8424^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-78055345 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42220 + ... + 44029.

It is an arithmetic number, because the mean of its divisors is an integer number (11773125).

Almost surely, 2^78055345 is an apocalyptic number.

It is an amenable number.

78055345 is a deficient number, since it is larger than the sum of its proper divisors (16129655).

78055345 is a wasteful number, since it uses less digits than its factorization.

78055345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86435.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 78055345 is about 8834.8936043396. The cubic root of 78055345 is about 427.3668999593.

It can be divided in two parts, 78055 and 345, that added together give a square (78400 = 280²).

The spelling of 78055345 in words is "seventy-eight million, fifty-five thousand, three hundred forty-five".