79380545 has 8 divisors (see below), whose sum is σ = 95307624. Its totient is φ = 63470464.

The previous prime is 79380529. The next prime is 79380557. The reversal of 79380545 is 54508397.

It can be written as a sum of positive squares in 4 ways, for example, as 2362369 + 77018176 = 1537^2 + 8776^2 .

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 79380545 - 2⁴ = 79380529 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11027 + ... + 16743.

It is an arithmetic number, because the mean of its divisors is an integer number (11913453).

Almost surely, 2^79380545 is an apocalyptic number.

It is an amenable number.

79380545 is a deficient number, since it is larger than the sum of its proper divisors (15927079).

79380545 is a wasteful number, since it uses less digits than its factorization.

79380545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8499.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 79380545 is about 8909.5760280723. The cubic root of 79380545 is about 429.7719089579.

The spelling of 79380545 in words is "seventy-nine million, three hundred eighty thousand, five hundred forty-five".