78254533 has 8 divisors (see below), whose sum is σ = 93322368. Its totient is φ = 64158864.

The previous prime is 78254531. The next prime is 78254543. The reversal of 78254533 is 33545287.

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

It is not a de Polignac number, because 78254533 - 2¹ = 78254531 is a prime.

It is a super-2 number, since 2×78254533² = 12247543870096178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78254492 and 78254501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78254531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242866 + ... + 243187.

It is an arithmetic number, because the mean of its divisors is an integer number (11665296).

Almost surely, 2^78254533 is an apocalyptic number.

It is an amenable number.

78254533 is a deficient number, since it is larger than the sum of its proper divisors (15067835).

78254533 is a wasteful number, since it uses less digits than its factorization.

78254533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486083.

The product of its digits is 100800, while the sum is 37.

The square root of 78254533 is about 8846.1592230753. The cubic root of 78254533 is about 427.7301210804.

It can be divided in two parts, 78254 and 533, that added together give a palindrome (78787).

The spelling of 78254533 in words is "seventy-eight million, two hundred fifty-four thousand, five hundred thirty-three".