78275353 has 8 divisors (see below), whose sum is σ = 84570248. Its totient is φ = 72019584.

The previous prime is 78275339. The next prime is 78275357. The reversal of 78275353 is 35357287.

It can be written as a sum of positive squares in 4 ways, for example, as 10163344 + 68112009 = 3188^2 + 8253^2 .

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

It is not a de Polignac number, because 78275353 - 2¹⁷ = 78144281 is a prime.

It is a super-2 number, since 2×78275353² = 12254061774549218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78275357) 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, 5550 + ... + 13687.

It is an arithmetic number, because the mean of its divisors is an integer number (10571281).

Almost surely, 2^78275353 is an apocalyptic number.

It is an amenable number.

78275353 is a deficient number, since it is larger than the sum of its proper divisors (6294895).

78275353 is a wasteful number, since it uses less digits than its factorization.

78275353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19563.

The product of its digits is 176400, while the sum is 40.

The square root of 78275353 is about 8847.3359267070. The cubic root of 78275353 is about 427.7680509448.

The spelling of 78275353 in words is "seventy-eight million, two hundred seventy-five thousand, three hundred fifty-three".