78495133 has 4 divisors (see below), whose sum is σ = 78995260. Its totient is φ = 77995008.

The previous prime is 78495127. The next prime is 78495139. The reversal of 78495133 is 33159487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33159487 = 47 ⋅705521.

It is an interprime number because it is at equal distance from previous prime (78495127) and next prime (78495139).

It can be written as a sum of positive squares in 2 ways, for example, as 9903609 + 68591524 = 3147^2 + 8282^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78495133 is a prime.

It is a super-2 number, since 2×78495133² = 12322971809375378, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78495139) 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, 249828 + ... + 250141.

It is an arithmetic number, because the mean of its divisors is an integer number (19748815).

Almost surely, 2^78495133 is an apocalyptic number.

It is an amenable number.

78495133 is a deficient number, since it is larger than the sum of its proper divisors (500127).

78495133 is a wasteful number, since it uses less digits than its factorization.

78495133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500126.

The product of its digits is 90720, while the sum is 40.

The square root of 78495133 is about 8859.7479083775. The cubic root of 78495133 is about 428.1680364004.

The spelling of 78495133 in words is "seventy-eight million, four hundred ninety-five thousand, one hundred thirty-three".