78754545 has 16 divisors (see below), whose sum is σ = 140008320. Its totient is φ = 42002352.

The previous prime is 78754519. The next prime is 78754573. The reversal of 78754545 is 54545787.

It is not a de Polignac number, because 78754545 - 2⁸ = 78754289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 78754545.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291549 + ... + 291818.

It is an arithmetic number, because the mean of its divisors is an integer number (8750520).

Almost surely, 2^78754545 is an apocalyptic number.

It is an amenable number.

78754545 is a deficient number, since it is larger than the sum of its proper divisors (61253775).

78754545 is a wasteful number, since it uses less digits than its factorization.

78754545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583381 (or 583375 counting only the distinct ones).

The product of its digits is 784000, while the sum is 45.

The square root of 78754545 is about 8874.3757526938. The cubic root of 78754545 is about 428.6391900000.

The spelling of 78754545 in words is "seventy-eight million, seven hundred fifty-four thousand, five hundred forty-five".