78360533 has 4 divisors (see below), whose sum is σ = 78396780. Its totient is φ = 78324288.

The previous prime is 78360521. The next prime is 78360559. The reversal of 78360533 is 33506387.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73239364 + 5121169 = 8558^2 + 2263^2 .

It is a cyclic number.

It is not a de Polignac number, because 78360533 - 2²⁴ = 61583317 is a prime.

It is a super-2 number, since 2×78360533² = 12280746264088178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78360493 and 78360502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78360593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14660 + ... + 19277.

It is an arithmetic number, because the mean of its divisors is an integer number (19599195).

Almost surely, 2^78360533 is an apocalyptic number.

It is an amenable number.

78360533 is a deficient number, since it is larger than the sum of its proper divisors (36247).

78360533 is a wasteful number, since it uses less digits than its factorization.

78360533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36246.

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 78360533 is about 8852.1484962691. The cubic root of 78360533 is about 427.9231618110.

It can be divided in two parts, 783 and 60533, that added together give a palindrome (61316).

The spelling of 78360533 in words is "seventy-eight million, three hundred sixty thousand, five hundred thirty-three".